Ques 33?
Can anybody solve this?
In triangle ABC, D is a point on AC and E is a point on AB, the intersection point of BD and CE is F. Area of BFC = 20 sq. Units, area of BFE = 10sq.units and area of CFD = 8sq.units. Find the area of ADFE ?
The average weight of a class of 100 students is 45 kg. The class consists of two sections, I and II, each with 50 students. The average weight, WI, of Section I is smaller than the average weight, WII, of Section II. If the heaviest student, say Deepak, of Section II is moved to Section I, and the lightest student, say Poonam, of Section I is moved to Section II, then the average weights of the two sections are switched, i.e., the average weight of Section I becomes WII and that of Section II becomes WI. What is the weight of Poonam? A. WII– WI = 1.0 B. Moving Deepak from Section II to I (without any move from I to II) makes the average weights of the two sections equal.
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In the 13th century due to lack of boards mathematician used to solve on wet sand.. once a mathematician wrote a set of natural nos starting from 1 and called his student to find the average of the nos.. the student missing a number while counting, replied 35(4/17), for which the teacher said that he had missed a no.. which no. Did he miss?
- 9
- 21
- 19
- 18
0 voters
How many 5 digit numbers are there whose digits are in increasing order(not necessarily strictly)?
In a four-digit number , the sum of the digits in the units place and the tens place is equal to the sum of the digits in the hundreds and the thousands places .The sum of the digits in the tens and the hundreds places is twice the sum of the other two digits. If the sum of the digits of the number is more than 20, then the digit in the units place can be?
a) 6 b)7 c)8 d)5
Please explain me in detail
Shravan and Ram travel along a circular path.They start from the same point. Shravan and Ram travel with a constant speed. Shravan travels in anticlockwise direction while Ram in clockwise direction.The first time they meet,they are at a distance of 600m in clockwise from some point X.The second time they meet,they are at a distance of 400m in anticlockwise direction from the same point X. Till this time,it is known that Shravan has not even completed a single round of the whole circular path.Find the circumference of the circular path? A)3141.59 B)3000.12 C)2918.36 D)3300.45 E)3090.11
A man purchases a certain no. of apple at 5 per rupee and same no. at 4 per rupee. He mixes them together and sells them at 4 per rupee. What is his gain or loss%? ans-11.11 % prof. need a detail solution....
Three positive
integers a,b,c are in G.P and a+b+c=70. If 3a,4b and 4c are in A.P, Find the
value of b?
plz explain the approach friends...
Two pipes A and B can fill a tank in 24 hours and 120/7 hours
respectively. Harihar opened the pipes A and B to fill an empty tank and some times later he closed the taps A and B , when the tank was supposed to be full. After that it was found that the tank was emptied in 2.5 hours because an outlet pipe "C" connected to the tank was open from the beginning. If Harihar closed the pipe C instead of closing pipes A and B the remaining tank would have been filled in :
Someone explain me this with lcm method plz..
find the smallest three digit number which when divided 7 leaves remainder of 6 and when divided by 11 leaves remainder of 8.. ? @scrabbler
4 vehicles are traveling on a straight line with constant speed. Truck overtook car at 2PM, and met the scooter at 4pm and motorcycle at 6pm. The motorcycle net the car at 7pm then it overtook the scooter at 8. At what time scooter and the car meet?
- 5:30 pm
- 5:40 pm
- None of these
- 5 pm
- 5:20 pm
0 voters
If p+q+r = 7, find the minimum possible value of p^2 + 9(q^2) + 4(r^2)?
A & B can build a wall in 15 hrs & 20 hrs resp. they worked together, use 180 less bricks per hour & built the wall in 12 hrs . find the no. of bricks in the wall
8400
8000
9000
1350
Post solution also!!!!!!
Price of mango is in the range 20-28. Average price for 16 mangoes is rs 23. Only one mango costs 20 and only one mango costs 28. Number of mangoes whose price is more than 21 is at least? Is there any short cut for these type of sums?
3 men and one woman can complete a piece of work in 4 days. How many days will it take for 2 women and 2 men to complete the same work?
I. 5 women can complete the same piece of work in 4 days
II. 2 men and one woman together can complete the same
piece of work in 5 days.