Please llet me know the concept of mixture and alligation and help me out with the following questions...............
1)A bartender stole champagne from a bottle that contained 50% of spirit and he replaced what he had stolen with champagne having 20% spirit. The bottle then contained only 25% spirit. How much of the bottle did he steal?
2)The price of a pen and a pencil is Rs. 35. The pen was sold at a 20% profit and the pencil at a 10% loss. If in the transaction a man gains Rs.4, how much is cost price of the pen?
Please llet me know the concept of mixture and alligation and help me out with the following questions...............
1)A bartender stole champagne from a bottle that contained 50% of spirit and he replaced what he had stolen with champagne having 20% spirit. The bottle then contained only 25% spirit. How much of the bottle did he steal?
Since there are no options given had to solve it by writing eqns. Otherwise these probs can be done easily by using the options.
If x is the amount of champagne stolen,
(100-x)*0.5+ 0.2X=25 Assuming the amount of champagne initially to be 100.
solving for x we get x=250/3
So total amount =(250/3)/100= 5/6 of the champagne originally there.
Is the answer correct
Please llet me know the concept of mixture and alligation and help me out with the following questions...............
2)The price of a pen and a pencil is Rs. 35. The pen was sold at a 20% profit and the pencil at a 10% loss. If in the transaction a man gains Rs.4, how much is cost price of the pen?
assuming the price of pen to be x and pencil to be y
x+y=35
since pen is sold at 20% profit and pencil at 10% loss,
1.2x+.9y=39
solving we get x=25 and y =10
1) upper limit for x+y = 3+4=7
lowetr limit =2-1=1
so ratio is 7
2) try with options.....
for 12,if he give 1/3rd and 1 ie. 4+1=5, he is left with 7 whose 1/3rd is not in whole no
for 15, if he gives 1/rd n 1 more ie. 5+1=6, he is left with 9
now again 1/3rd +1 ie 3+1=4 so 5 left........
now 1/5th + 4 left ie. 1+4=5
so no mango left so 15 is the correct option.........
Please llet me know the concept of mixture and alligation and help me out with the following questions...............
1)A bartender stole champagne from a bottle that contained 50% of spirit and he replaced what he had stolen with champagne having 20% spirit. The bottle then contained only 25% spirit. How much of the bottle did he steal?
5/6 of the bottle , i.e 83.33%
Please llet me know the concept of mixture and alligation and help me out with the following questions...............
2)The price of a pen and a pencil is Rs. 35. The pen was sold at a 20% profit and the pencil at a 10% loss. If in the transaction a man gains Rs.4, how much is cost price of the pen?
item sold at loss:CP=10,
item sold at profit:CP=25
plz help me wid these questions.......:nervous:
Q1) a train travels 8 km in 1st quarter of an hour, 6 km in second quarter and 40 km in 3rd quarter. find the avg speed of train per hr over the entire journey.
ans- 72km/hr
Q2)the avg age of 8 person is inc. by 2 yrs when 2 men aged 35 & 45 yrs are replaced by 2 women.find avg age of 2 women
ans - 48
Q3)in a hotel where rooms are numbered from 101 to 130 each room give an earning of 3000 for 1st 15 days and 2000 for the later half,per room. find the avg earning per room per day(assume 30 days per month)
ans - 2500
thnxx in advance..............
1. dist/time = 54/0.75 = 72
2. weight inc of group = 8*2 = difference of incoming to outgoing masses
outgoing mass = 80
incoming = 80 +16
avg = 48
1. harsh wanted to subtract 5 from no Unfortunately he added 5 instead of subtracting.Find the percentage change in result.
a) 300% b)66.66% c)33.33% e)cannot be determined
d)50%
2. in an exam 80% students passed in physics & 70% in chem while 15% failed in both. If 325 students passed in both, find total students who appeared.
ans : 500
3. the ticket to theatre is worth 250. when price is reduced, sale inc. by 50% but collection record a decrease of 17.5% find deduction in price.
ans : 112.5
1. harsh wanted to subtract 5 from no Unfortunately he added 5 instead of subtracting.Find the percentage change in result.
a) 300% b)66.66% c)33.33% e)cannot be determined
d)50%
Man whats the answer for this , i'm getting something which is not there in option .
%chnage = ((105-95)/95)*100, assuming 100 is the original number.
Am i missing something here ??
1. dist/time = 54/0.75 = 72
2. weight inc of group = 8*2 = difference of incoming to outgoing masses
outgoing mass = 80
incoming = 80 +16
avg = 48
it wud b very nice of u if u cud give explanatory answers
1. harsh wanted to subtract 5 from no Unfortunately he added 5 instead of subtracting.Find the percentage change in result.
a) 300% b)66.66% c)33.33% e)cannot be determined
d)50%
2. in an exam 80% students passed in physics & 70% in chem while 15% failed in both. If 325 students passed in both, find total students who appeared.
ans : 500
3. the ticket to theatre is worth 250. when price is reduced, sale inc. by 50% but collection record a decrease of 17.5% find deduction in price.
ans : 112.5
1. cannot be determined, depends on number on which operation is carried out.
2.500, 85% passed student....
students passed in both = 80+70-85 = 65%
65% = 325.
3.for consecutive percentage changes in product of two variables(A%,B%)
overall = A + B + AB/100
here, overall = -17.5
A = 50
On solving, B = -45%
reduction = 45% of 250 = 112.5
1. harsh wanted to subtract 5 from no Unfortunately he added 5 instead of subtracting.Find the percentage change in result.
a) 300% b)66.66% c)33.33% e)cannot be determined
d)50%
i think its e. Coz for different values we get diff answers ....
3. the ticket to theatre is worth 250. when price is reduced, sale inc. by 50% but collection record a decrease of 17.5% find deduction in price.
Assume the price decrease as x
(250-x)* 1.5 y = .825* 250 * y
Solving gives x=112.5
:)
Man whats the answer for this , i'm getting something which is not there in option .
%chnage = ((105-95)/95)*100, assuming 100 is the original number.
Am i missing something here ??
i'm not chennuy..............n well i have seen that on assuming different no as base no, i get different ans so i thought that correct ans is option (e) but in book it is not the correct answer
nivedita.datta Saysi'm not chennuy..............n well i have seen that on assuming different no as base no, i get different ans so i thought that correct ans is option (e) but in book it is not the correct answer
U r right...the answer cannot be determined......
Books do have wrong answers....may be printing mistakes
1. bill ambani started off with a small capital. In the first yr, he earned a profit of 50% and donated 50% of the total capital(initial capital + profit) to charity. The same course wasw folled in 2nd & 3rd yr. If at the end of 3 yrs he is left with Rs 16875, then find the amt donated by him at end of 2nd ys.
nivedita.datta Says1. bill ambani started off with a small capital. In the first yr, he earned a profit of 50% and donated 50% of the total capital(initial capital + profit) to charity. The same course wasw folled in 2nd & 3rd yr. If at the end of 3 yrs he is left with Rs 16875, then find the amt donated by him at end of 2nd ys.
let his capital be =x
firts year,capital after donation=1.5x*.5=.75x
2nd yr:.75x*1.5*.5=.75*.75x
3rd yr:.75*.75*1.5*.5=.75*.75*.75x
.75*.75*.75x=16875
x=40000
we are asked to find out : .75*.75*40000=22500
Originally Posted by nivedita.datta View Post
1. bill ambani started off with a small capital. In the first yr, he earned a profit of 50% and donated 50% of the total capital(initial capital + profit) to charity. The same course wasw folled in 2nd & 3rd yr. If at the end of 3 yrs he is left with Rs 16875, then find the amt donated by him at end of 2nd ys.
Lets assume that bill started with the golden figure 100 !!
No
Year 1 : 150 Earned , 75 Donated
Year 2 : 75 *1.5 (Earned) , (75*1.5/2) = 56.25 donated
Year 3 : 56.25 *1.5 earned , (56.25*1.5/2)= 42.1875 donated !!
now if 42.1875 corresponds to 16875
56.25 corresponds to = 16875 * 56.25/42.1875 = 22500 !!
Wallah !
Originally Posted by nivedita.datta View Post
1. bill ambani started off with a small capital. In the first yr, he earned a profit of 50% and donated 50% of the total capital(initial capital + profit) to charity. The same course wasw folled in 2nd & 3rd yr. If at the end of 3 yrs he is left with Rs 16875, then find the amt donated by him at end of 2nd ys.
Lets assume that bill started with the golden figure 100 !!
No
Year 1 : 150 Earned , 75 Donated
Year 2 : 75 *1.5 (Earned) , (75*1.5/2) = 56.25 donated
Year 3 : 56.25 *1.5 earned , (56.25*1.5/2)= 42.1875 donated !!
now if 42.1875 corresponds to 16875
56.25 corresponds to = 16875 * 56.25/42.1875 = 22500 !!
Wallah !
0.75* Donation in 2nd year=16875=> Donation in 2nd year=22500 😉
no buddy ans is 13 .................
heyplz help me .....
Assume that the trains between delhi and karnal leave each city every hour on the hour. It takes exactly six hours for the trains to travel from one city to another. On its run from delhi to karnal , a train will meet N trains going in the opposite direction. What is the value of N?
a) 13
b) 6
c) 11
d) 7
plz help me .....ans is 13 ........