A can do a piece of work in 15 days, which B can do in 10
days. B worked at it for 8 days. A can finish the remaining
work in

Answer Posted / rajguru

fraction of work by A in one day = W/15
fraction of work by B in one day = W/10
work completed by B in 8 days = W/10 * 8
fraction of work remaining = W(1-8/10)=2/10=1/5
time taken for A = 1/5 / 1/15= 3

Is This Answer Correct ?    8 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

A hotel has 10 storeys. Which floor is above the floor below the floor, below the floor above the floor, below the floor above the fifth.

1126


chief : tribe :: governor :

755


A car is filled with four and half gallons of oil for full round trip. Fuel is taken 1/4 gallons mor3 in going than coming. What is the fuel consumed in coming up?

1056


A ridge formed over Pacific Ocean was because of the intersection of two volcanoes. But in history it was written that it was not due to those volcanoes. It proves a contradictory to form the view that history will be proved wrong in the future.Inference?

589


There are 9 coins. One of 9 is less weighted and others have equal weighed. Find the minimum no of balances to find the defective coin?

788






Four Members A, B, C, D are playing a game .A person losing a game should double the amount of others .B, C, D are losing in order after three games .The amount after 3 games are A&B having 40,D is having 16&C 80. Who started with greatest amount of money?

768


Robert is travelling on his cycle and has calculated to reach point a at 2 p.m. If he travels at 10 kmph, he will reach there at 12 noon if he travels at 15 kmph. At what speed must he travel to reach?

790


if area is icc. by 30% then what is the change in the area?

1564


Gaurav buys milk at Rs. 60 per litre, adds water to it and then sells it at Rs. 75 per litre. What should be the ratio of milk to water to get a profit of 37.5%?

693


500 men are arranged in an array of 10 rows and 50 columns . ALL tallest among each row aare asked to fall out . And the shortest among THEM is A. Similarly after resuming that to their originaal podsitions that the shorteest among each column are asked to fall out. And the longest among them is B . Now who is taller among A and B ?

694


THERE ARE 3 PILES OF BOOKS ON THE TABLE YOU NEED TO ARRANGE THEM IN THE SELF SUCH THAT 1ST BOOK OF EACH PILE GETS PLACED ON THE SELF,WHAT IS THE POSSIBLE NO OF ARRANGEMENTS

3099


A man while going down in a escalator(which is moving down) takes 50 steps to reach down and while going up takes 125 steps. If he goes 5 times faster upwards than downwards. What will be the total no of steps if the escalator were'nt moving.

763


There are 6 people W,H,M,C,G,F who are murderer, victim, judge, police, witness, hangman. There was no eyewitness only circumstantial witness. The murderer was sentenced to death. Read following statement and determine who is who.

688


Which of the following does multithreading allow? A. several transactions that require the same program to use one copy of the program. B. many tasks to be allocated to the terminal. C. an audit trail of all files records from all files updated by a particular application

1831


Scientific publishing aptitude interview question

989