A and B can together do a piece of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it ?

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4 men and 2 woman can complete a work in 2 days. If 2 men alone take 5 days to complete the work, find the time taken by 2 women alone to complete the work.

A. 15 days B. 10 days C. 8 days D. 20 days...

A work can be finished in 16 days by twenty women. The same work can be finished in fifteen days by sixteen men. The ratio between the capacity of a man and a woman is_________?

A. 1:3 B. 4:3 C. 2:3 D. 2:1...

12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres.  How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?

A. 14 B. 15 C. 16 D. 18...

P,Q and R together earn Rs.1620 in 9 days. P and R can earn Rs.600 in 5 days. Q and R in 7 days can earn Rs.910. How much amount does R can earn per day?

A. Rs.40 B. Rs.70 C. Rs.90 D. Rs.100...

Two taps X and Y can fill a tank in 10 hrs. and 15 hrs.respectively.  If the both taps are opened together, the tank will be full in_________?

A. 3 hrs. B. 4 hrs, C. 5 hrs. D. 6 hrs....