Atul and Binay together complete a piece of work in 5 days. If Binay alone can complete the same work in 8 days, how many days can Atul take to complete the same work alone?

Show answer & explanation

Answer: (A) 40/3 days

Explanation

Together they do 1/5 of the work a day and Binay alone 1/8. So Atul does 1/5 − 1/8 = 3/40 a day and needs 40/3 days alone.