This is a thread dedicated entirely to the problems faced by CAT Aspirants solving Nishit Sinha’s Quant and LA/DI Book. This thread will help CAt aspirants to understand the Basic concepts thoroughly for those who are using the book and wil…
This is a thread dedicated entirely to the problems faced by CAT Aspirants solving Nishit Sinha's Quant and LA/DI Book.
This thread will help CAt aspirants to understand the Basic concepts thoroughly for those who are using the book and will also help others who are preparing for various MBA entrance exams and following some other book.
It will be highly appreciated if the Moderators kindly allow us to start this new thread for Discussion of Nishit Sinha's Quant,DI and LA Problems which helpful for CAT preparation.
Nishit Sinha followers will be free to post any problems from the book which they feel are difficult to understand or which requires a detailed explanation , and we expect some of us who have solved it will definitely help others.
IT WILL BE OF GREAT HELP IF U MENTION :
1.THE CHAPTER
2.PAGE NUMBER
3. QUESTION (For others who are not using this book to have a feel of the problem)
4. DETAILED EXPLANATIONS(With shortcuts If any)
Hope this thread will be highly appreciated by those who are using this book and for others who are not using it.
TEACHING OTHERS IS THE BEST WAY TO GAIN KNOWLEDGE.
So start posting your queries!!!!!!!!!!
Suggestion and comments will be highly appreciated.
GOOD LUCK.
Here are the GoogleBooks links
Quant : http://books.google.co.in/books?id=eOnaFSKRSR0C&printsec;=frontcover&source;=gbs_similarbooks_s&cad;=1#v=onepage&q;&f;=false
DI/LR : http://books.google.co.in/books?id=H3ZM_gp-NfwC&pg;=PR13&dq;=Pearson+guide+to+DI/LR&hl;=en&ei;=b_g9TO-hDIzvcIK48aMC&sa;=X&oi;=book_result&ct;=result&resnum;=1&ved;=0CC0Q6AEwAA#v=onepage&q;&f;=false
Hope you find the links interesting.
This thread will help CAt aspirants to understand the Basic concepts thoroughly for those who are using the book and will also help others who are preparing for various MBA entrance exams and following some other book.
It will be highly appreciated if the Moderators kindly allow us to start this new thread for Discussion of Nishit Sinha's Quant,DI and LA Problems which helpful for CAT preparation.
Nishit Sinha followers will be free to post any problems from the book which they feel are difficult to understand or which requires a detailed explanation , and we expect some of us who have solved it will definitely help others.
IT WILL BE OF GREAT HELP IF U MENTION :
1.THE CHAPTER
2.PAGE NUMBER
3. QUESTION (For others who are not using this book to have a feel of the problem)
4. DETAILED EXPLANATIONS(With shortcuts If any)
Hope this thread will be highly appreciated by those who are using this book and for others who are not using it.
TEACHING OTHERS IS THE BEST WAY TO GAIN KNOWLEDGE.
So start posting your queries!!!!!!!!!!
Suggestion and comments will be highly appreciated.
GOOD LUCK.
Here are the GoogleBooks links
Quant : http://books.google.co.in/books?id=eOnaFSKRSR0C&printsec;=frontcover&source;=gbs_similarbooks_s&cad;=1#v=onepage&q;&f;=false
DI/LR : http://books.google.co.in/books?id=H3ZM_gp-NfwC&pg;=PR13&dq;=Pearson+guide+to+DI/LR&hl;=en&ei;=b_g9TO-hDIzvcIK48aMC&sa;=X&oi;=book_result&ct;=result&resnum;=1&ved;=0CC0Q6AEwAA#v=onepage&q;&f;=false
Hope you find the links interesting.
Ratio Proportion
Difficulty Level : Moderate
Q.18.The time taken by a jet,to reach a certain place while flying at a speed ,slower by 300m/s than the normal , is double the time taken by it while flying at a speed 300m/s than normal.
What is the ratio of delayed time while flying slower to the earlier time while flying faster?
(a) 3:2 (b) 1:2 (c) 2:1 (d) Cannot be determined
Q.40. The square of the time taken by a planet to complete one revolution around the sun varies as the cube of its mean distance from the sun. If the ratio of the mean distance Mars and saturn from the sun is 16:3. FInd the number of days on saturn that are equal to a year on Mars.
(a) 4496 (b) 4294 (c) 5598 (d) 4696
Q.19. Anand and Bhavana have a few one rupee ,50 paisaand 25 paisa coins each. The total with them is Rs 5. The number of coins of the two of the three types of coins that Anand has are equal and same is the case that Bhavana has . If Anand has the maximum possible total number of coins , then find the maximum possible total number of coins that Bhavana can have given that she has fewer coins than Anand.
(a) 16 (b)12 (c) 10 (d) 9
I HOPE WE WILL SURELY RECEIVE SOME MORE QUALITY PROBLEMS FROM THE BOOK AND SOON THIS SET OF QUERY WILL BE RESOLVED!!!!
Difficulty Level : Moderate
Q.18.The time taken by a jet,to reach a certain place while flying at a speed ,slower by 300m/s than the normal , is double the time taken by it while flying at a speed 300m/s than normal.
What is the ratio of delayed time while flying slower to the earlier time while flying faster?
(a) 3:2 (b) 1:2 (c) 2:1 (d) Cannot be determined
Q.40. The square of the time taken by a planet to complete one revolution around the sun varies as the cube of its mean distance from the sun. If the ratio of the mean distance Mars and saturn from the sun is 16:3. FInd the number of days on saturn that are equal to a year on Mars.
(a) 4496 (b) 4294 (c) 5598 (d) 4696
Q.19. Anand and Bhavana have a few one rupee ,50 paisaand 25 paisa coins each. The total with them is Rs 5. The number of coins of the two of the three types of coins that Anand has are equal and same is the case that Bhavana has . If Anand has the maximum possible total number of coins , then find the maximum possible total number of coins that Bhavana can have given that she has fewer coins than Anand.
(a) 16 (b)12 (c) 10 (d) 9
I HOPE WE WILL SURELY RECEIVE SOME MORE QUALITY PROBLEMS FROM THE BOOK AND SOON THIS SET OF QUERY WILL BE RESOLVED!!!!
It seems that no one is interested in this thread.
I had started this thread with this initiative, finding out that there is no thread / website for CAT preparation where we can openly discuss the ed by Nishit Sinha follwers while solving the book.
Please post ur queries and make this thread a succesful one.
I hope this thread with all your support can b really helpful during our CAT 2009 preparation and I myself will take some responsibility to make the thread a successful one.
Once again I request all CAT aspirants using Nishit Sinha followers to come out with your doubts and let's discuss them.
I am also using Nishit's book for QA - and have lot of queries.
Don't you think its better to post these questions in the existing thread "official quant thread" ?
its getting better hits plus ppl are solving questions in that thread anyway irrespective of the source of the question ...
just a thought :)
I wish Nishit had given hints for all the questions in all levels - instead of being choosy about it - it so happens that he has solved the same questions that i know the answers for and not the more "complicated" ones ( where I am stumped ) ...
and oh, not to mention the irritating typos that confuse us even more !! 😛 😃
Ratio Proportion
Difficulty Level : Moderate
Q.18.The time taken by a jet,to reach a certain place while flying at a speed ,slower by 300m/s than the normal , is double the time taken by it while flying at a speed 300m/s than normal.
What is the ratio of delayed time while flying slower to the earlier time while flying faster?
(a) 3:2 (b) 1:2 (c) 2:1 (d) Cannot be determined
Q.19. Anand and Bhavana have a few one rupee ,50 paisaand 25 paisa coins each. The total with them is Rs 5. The number of coins of the two of the three types of coins that Anand has are equal and same is the case that Bhavana has . If Anand has the maximum possible total number of coins , then find the maximum possible total number of coins that Bhavana can have given that she has fewer coins than Anand.
(a) 16 (b)12 (c) 10 (d) 9
1
ans : 2:1distance/(normal speed - 300) = 2t ( delay time)
distance/(normal speed + 300 ) = t ( early time )
ratio => 2:1
19) ans : 12
(1 Re, 50p, 25p)
Anand's no. of coins : (1, 1, 14) => Rs. 5 ( 16 coins )
Bhavna : (2, 2,
=> Rs. 5 ( 12 coins )
I am also using Nishit's book for QA - and have lot of queries.
Don't you think its better to post these questions in the existing thread "official quant thread" ?
its getting better hits plus ppl are solving questions in that thread anyway irrespective of the source of the question ...
just a thought :)
I wish Nishit had given hints for all the questions in all levels - instead of being choosy about it - it so happens that he has solved the same questions that i know the answers for and not the more "complicated" ones ( where I am stumped ) ...
and oh, not to mention the irritating typos that confuse us even more !! 😛 :)
This thread is a great initiative! Personally I believe it should stay the way it is, and not be merged with the existing Quant thread because this would be a repository for 'only' Nishit Sinha questions and nothing else. Hence there wont be any confusion. Even in future, say a few years down the line, people can use this thread to get answers to questions discussed here previously. There is a similar thread for Arun Sharma's questions - that was very helpful as well. This year I did use Nishit Sinha for my preps and it certainly helped. I only wished I'd started it earlier. All the best!
Thank u for ur support,Actually I started this thread to discuss Nishit Sinha problems in a particular thread like Arun Sharma one so that we can later refer to them in a particular placeand not to search it here and there.
Anyways thanks to both of u for u r valuable suggestion,Looking forward for some more valuable suggestions to improve the thread.
Thank u for ur support,Actually I started this thread to discuss Nishit Sinha problems in a particular thread like Arun Sharma one so that we can later refer to them in a particular placeand not to search it here and there.
Anyways thanks to both of u for u r valuable suggestion,Looking forward for some more valuable suggestions to improve the thread.
Hey...will be here to help out if reqd...
Personally i wud have advised u guys to make use of the existing official quant thread as more ppl wud respond to ur queries...
Will try to help out whenever possible...
Hey...will be here to help out if reqd...
Personally i wud have advised u guys to make use of the existing official quant thread as more ppl wud respond to ur queries...
Will try to help out whenever possible...
Tahnks Vivek! U will always b reqired for solving the problems.Thanks for giving us a wonderful suggestion so what can we do now, put the problems in that thread and post it here /what do u suggest?
ABhishek009 SaysTahnks Vivek! U will always b reqired for solving the problems.Thanks for giving us a wonderful suggestion so what can we do now, put the problems in that thread and post it here /what do u suggest?
Probably wat u can do is post the link for this thread on the Quant thread and let the ppl know tat u guys wud be discussing questions from Nishit Sinha on this dedicated thread... This wud atleast ensure tat regulars from tat thread are aware of the existence of this thread..meanwhile continue with ur discussions on this thread, if u reach a deadend wrt some problem, they u can choose to post it on the official quant thread to get the help of puys there...
I second Vivek..
Please let other know about it..
It's a good initiative and I am sure most of the CAT aspirants are using this book, no doubt this thread will help us a lot..
Keep them coming
atb!!!
Thank you
Ratio Proportion
Difficulty Level : Moderate
Q.40. The square of the time taken by a planet to complete one revolution around the sun varies as the cube of its mean distance from the sun. If the ratio of the mean distance Mars and saturn from the sun is 16:3. FInd the number of days on saturn that are equal to a year on Mars.
(a) 4496 (b) 4294 (c) 5598 (d) 4696
HOPE WE WILL SURELY RECEIVE SOME MORE QUALITY PROBLEMS FROM THE BOOK AND SOON THIS SET OF QUERY WILL BE RESOLVED!!!!
Soln.:
t^2=k*d^3 =>t=k*d^(3/2)
As t(mars)=k*d^(2^4)^3/2=k*2^6
t(saturn)=k*3^(3/2)=k*3srqt(3)
Now as saturn is nearer than mars then we can say that 1 day in mars is equivalent to 64/3sqrt(3) in saturn
So for calculation we can assume 1 year is consist of 366days
Then answer becomes 4490(approx)
Option (a)
Thank you...
Thanx to Love CAT and u for the wonderful suggestion. I have posted the link in the official quant thread.
Since no one is posting questions , let me again take the wonderful opportunity of getting my queries resolved by some of the smartest brain sof India.
Here are the questions where I am having some doubts.It would be of great help if u explain the logic too in brief along with the answer/solution.
Cahpter : Ratio, Proportion and Variation
Foundation Exercise
Q.11. Kunal , Saurav and Gopi assemble for a dutch party. Kunal brings 3 guavas while Saurav brings 5 .Since Gopi did not have any Guavas he contributed Rs 8 . How much money should Kunal and Saurav respectively get ,assumung each of the three consumes an equal portion of the guava.
(a)1,6 (b)2,5 (c)5,7 (d)None of these
Q.21. Two candles of the same length are lighted at 12 noon . The first is consumed in 6 Hrs And the second in 4 Hrs. Assuming that each candle burns at a constant rate, in how many Hrs after being lighted ,was the first candle twice the length of the socond candle?
(a) 3 Pm (b) 2Pm (c) 1.30Pm (d)2.30 Pm
Q.30. Satish used 6 litres of oil paint to paint a map of India , 6m high .How many litres of oil paint will Santosh need for painting a proportionally scaled map of the height 18m?
(a) 54 (b) 18 (c) 30 (d) Can not be determined
Q.47-48 A book having pages between 4000 - 5000 is divided into 4 chapters . The total number of pages in each of the 4 parts is the same.
The ratio of the chapters axross all the parts is 6:5:10:14 . The number of pages in the 4 th part is 70 .
Q.47. What is the total number of pages in the book?
(a) 4000 (b) 4800 (c) 4200 (d) 4600
Q.48. What is the total number of chapters in the book?
(a) 113 (b) 226 (c) 127 (d) None of these
Q.27. The sum toatlof the salary of Atul ,Binod and Charu is Rs 350 . If they spend 60% , 80 % and 75% of their respective salaries , then their savings are in the ratio of 8:8:5. FInd the salary of Atul?
(a) 50 (b) 100 (c) 200 (d) 250
Since no one is posting questions , let me again take the wonderful opportunity of getting my queries resolved by some of the smartest brain sof India.
Here are the questions where I am having some doubts.It would be of great help if u explain the logic too in brief along with the answer/solution.
Cahpter : Ratio, Proportion and Variation
Foundation Exercise
Q.11. Kunal , Saurav and Gopi assemble for a dutch party. Kunal brings 3 guavas while Saurav brings 5 .Since Gopi did not have any Guavas he contributed Rs 8 . How much money should Kunal and Saurav respectively get ,assumung each of the three consumes an equal portion of the guava.
(a)1,6 (b)2,5 (c)5,7 (d)None of these
Q.21. Two candles of the same length are lighted at 12 noon . The first is consumed in 6 Hrs And the second in 4 Hrs. Assuming that each candle burns at a constant rate, in how many Hrs after being lighted ,was the first candle twice the length of the socond candle?
(a) 3 Pm (b) 2Pm (c) 1.30Pm (d)2.30 Pm
Q.30. Satish used 6 litres of oil paint to paint a map of India , 6m high .How many litres of oil paint will Santosh need for painting a proportionally scaled map of the height 18m?
(a) 54 (b) 18 (c) 30 (d) Can not be determined
Q.47-48 A book having pages between 4000 - 5000 is divided into 4 chapters . The total number of pages in each of the 4 parts is the same.
The ratio of the chapters axross all the parts is 6:5:10:14 . The number of pages in the 4 th part is 70 .
Q.47. What is the total number of pages in the book?
(a) 4000 (b) 4800 (c) 4200 (d) 4600
Q.48. What is the total number of chapters in the book?
(a) 113 (b) 226 (c) 127 (d) None of these
Q.27. The sum toatlof the salary of Atul ,Binod and Charu is Rs 350 . If they spend 60% , 80 % and 75% of their respective salaries , then their savings are in the ratio of 8:8:5. FInd the salary of Atul?
(a) 50 (b) 100 (c) 200 (d) 250
1) Total number of guavas = 3 + 5 = 8.
Since those are equally divided among the three, each one gets 2.66
Now Gopi contributes Rs 8 for 2.66 guavas, which means each guava costs
8/2.66 = Rs. 3
Kunal brings 3 guavas which cost 3 x 3 = Rs. 9. But each one's contribution (rather expense) is Rs 8. Hence, Kunal should receive Rs. 1.
Saurav brings 5 guavas which cost him = 5 x 3 = Rs.15. Hence he should receive 15 - 8 = Rs 7.
2) Let the length of the candle be 24 cms. The first candle burns in 6 hours, hence the rate of burning is 4 cms/hour. The second one burns in 4 hours, hence its rate of burning is 6 cms/hours.
According to the problem,
(24 - 4n)/(24 - 6n) = 2/1 where n = number of hours after which the first candle is twice the second one in length.
Solve the above equation to get n = 3 hours.
Q.11. Kunal , Saurav and Gopi assemble for a dutch party. Kunal brings 3 guavas while Saurav brings 5 .Since Gopi did not have any Guavas he contributed Rs 8 . How much money should Kunal and Saurav respectively get ,assumung each of the three consumes an equal portion of the guava.
(a)1,6 (b)2,5 (c)5,7 (d)None of these
My answer is none of these...
Approach:
K........S.......G
3........5.......-
Shared equally so, 2.66 each....guavas left with K 0.33, and 2.33 left with S...these are eaten by Gopi...
Ratio of money tat K, S shud get is 0.33: 2.33
ie 1:7
So 8 shud be distributed as 1,7...so none of these...
Q.21. Two candles of the same length are lighted at 12 noon . The first is consumed in 6 Hrs And the second in 4 Hrs. Assuming that each candle burns at a constant rate, in how many Hrs after being lighted ,was the first candle twice the length of the socond candle?
(a) 3 Pm (b) 2Pm (c) 1.30Pm (d)2.30 Pm
Let length of both candles be 24 (to ease up the calculation part)....24 = 4 * 6...
Candle1 (c1) will reduce by 4m after every hr, and candle2(c2) by 6m.
At 1pm: c1 = 20m,c2=18
at 2pm: c1=16,c2=12
at 3pm: c1=12,c2=6
So answer is option A...
Q.30. Satish used 6 litres of oil paint to paint a map of India , 6m high .How many litres of oil paint will Santosh need for painting a proportionally scaled map of the height 18m?
(a) 54 (b) 18 (c) 30 (d) Can not be determined
For any figure, area is proportionate to side^2 (Similarity...for triangles, parallelogram...generalising...
So since proportion is 3, area wud be increased 9 times...so 6*9 = 54 litres reqd...so option A...
Q.47-48 A book having pages between 4000 - 5000 is divided into 4 chapters (parts??). The total number of pages in each of the 4 parts is the same.
The ratio of the chapters across all the parts is 6:5:10:14. The number of pages in the 4 th part is 70. (This part is confusing...Each part has equal no of pages and 4th part has 70??...pls check qn)
Q.47. What is the total number of pages in the book?
(a) 4000 (b) 4800 (c) 4200 (d) 4600
Q.48. What is the total number of chapters in the book?
(a) 113 (b) 226 (c) 127 (d) None of these
Check comments above...
Q.27. The sum toatl of the salary of Atul ,Binod and Charu is Rs 350 . If they spend 60% , 80 % and 75% of their respective salaries , then their savings are in the ratio of 8:8:5. FInd the salary of Atul?
(a) 50 (b) 100 (c) 200 (d) 250
a+b+c=350
Savings...0.4a, 0.2b, 0.25c (60% expenditure, means 40% savings for A,...and so on..)
.4a: .2b: .25c = 8:8:5
ie .4a: .2b = 8:8
2a:b = 1....b=2a
.4a: .25c = 8:5
8a:5c = 8:5
a=c
a+b+c=350
a+2a+a=350
so a=350/4 = 87.50
will check soln in sometime...
1) Total number of guavas = 3 + 5 = 8.
Since those are equally divided among the three, each one gets 2.66
Now Gopi contributes Rs 8 for 2.66 guavas, which means each guava costs
8/2.66 = Rs. 3
Kunal brings 3 guavas which cost 3 x 3 = Rs. 9. But each one's contribution (rather expense) is Rs 8. Hence, Kunal should receive Rs. 1.
Saurav brings 5 guavas which cost him = 5 x 3 = Rs.15. Hence he should receive 15 - 8 = Rs 7.
2) Let the length of the candle be 24 cms. The first candle burns in 6 hours, hence the rate of burning is 4 cms/hour. The second one burns in 4 hours, hence its rate of burning is 6 cms/hours.
According to the problem,
(24 - 4n)/(24 - 6n) = 2/1 where n = number of hours after which the first candle is twice the second one in length.
Solve the above equation to get n = 3 hours.
Best explanation posssible for the problems.
Thnx a million Ton for the great expalnation.
Keep on clearing our doubts , we really need ur help for making this thread an useful one.
Really a great expalnation.
Posting a few questions on Percentages where I face some detailed explanations are really needed.
Q.1. Fresh watermelon contains 90% water by weight whereas dry watermelon contains 20% water by weight . What is the weight of dry watermelon obtained from 20 kgs of fresh watermelon?
( Really can't understand the problem and the solution problem , need a good explanatin with basic concept)
(a) 2.4 kgs (b) 2 kgs (c) 2.5 kgs (d) Cannot be determined
Q.2. 60% of the students of a class are boys and in an examination , 80% of the girls scored more than 40 marks( out of a maximum of 150 marks )
If 60% fo the total students scored more tahn 40 marks in the same examination , find the fraction of boys who score dmore than 40 marks or less.
(a) 8/15 (b)7/15 (c) 4/5 (d) 1/5
Q.3. In a laboratory experiemtn a sample of air which was a mixture of Oxygen and watervapour is taken .Water vapour , contains Oxygen and Hydrogen gases . If air contains a total of 70% Oxygen ( Including that in watervapour) by weight what while water contains 16.66% by weight ,how many Kgs of water vapour is present in 1 Kg of air?
(a) 0.2 (b) 0.36 (c) 0.32 (d) 0.25
Q.4. A thousand people voted on aresolution with 10% of the voters being invalid .After some discussion 1000 people voted again . ths time there were 20 % invalid vote . The opponents were increased by 50% while the motion was now rejected by a majority , ehich is 300% more than it was formally passed by . How many people voted aginst the resolution after the discussion/
(a) 400 (b) 200 (c) 300 (d) 500
Q.5. In an election for the post of class representive at Patimpura centre where 2 contestants were contesting , 10% of the students did not vote and 60 votes recored were declared invalid .Winning candidate won the election by 308 votes and it was found that he had been supported by 47% of the whole students of the class. Which of the folowing can be the number of valid votes recorded for each candidate?
(a) 2308,2008 (b) 2904,2596 (c) 2914,2606 (d) 2464,2772
I HOPE I WILL GET MY QUERIES RESOLVED BUT AT THE SAME TIME I WOULD REQEST ALL NISHIT SINHA FOLLOWERS TO POST ANY DOUBT AND GET THEM RESOLVED .
Q.1. Fresh watermelon contains 90% water by weight whereas dry watermelon contains 20% water by weight . What is the weight of dry watermelon obtained from 20 kgs of fresh watermelon?
( Really can't understand the problem and the solution problem , need a good explanatin with basic concept)
(a) 2.4 kgs (b) 2 kgs (c) 2.5 kgs (d) Cannot be determined
Q.2. 60% of the students of a class are boys and in an examination , 80% of the girls scored more than 40 marks( out of a maximum of 150 marks )
If 60% fo the total students scored more tahn 40 marks in the same examination , find the fraction of boys who score dmore than 40 marks or less.
(a) 8/15 (b)7/15 (c) 4/5 (d) 1/5
Q.3. In a laboratory experiemtn a sample of air which was a mixture of Oxygen and watervapour is taken .Water vapour , contains Oxygen and Hydrogen gases . If air contains a total of 70% Oxygen ( Including that in watervapour) by weight what while water contains 16.66% by weight ,how many Kgs of water vapour is present in 1 Kg of air?
(a) 0.2 (b) 0.36 (c) 0.32 (d) 0.25
Q.4. A thousand people voted on aresolution with 10% of the voters being invalid .After some discussion 1000 people voted again . ths time there were 20 % invalid vote . The opponents were increased by 50% while the motion was now rejected by a majority , ehich is 300% more than it was formally passed by . How many people voted aginst the resolution after the discussion/
(a) 400 (b) 200 (c) 300 (d) 500
Q.5. In an election for the post of class representive at Patimpura centre where 2 contestants were contesting , 10% of the students did not vote and 60 votes recored were declared invalid .Winning candidate won the election by 308 votes and it was found that he had been supported by 47% of the whole students of the class. Which of the folowing can be the number of valid votes recorded for each candidate?
(a) 2308,2008 (b) 2904,2596 (c) 2914,2606 (d) 2464,2772
I HOPE I WILL GET MY QUERIES RESOLVED BUT AT THE SAME TIME I WOULD REQEST ALL NISHIT SINHA FOLLOWERS TO POST ANY DOUBT AND GET THEM RESOLVED .