Ehsaan is twice as good a worker as Kamal and together they finish a piece of work in 29 days. In how many days will Kamal, working alone, finish the work?

Show answer & explanation

Answer: (C) 87

Explanation

If Kamal does 1 unit a day, Ehsaan does 2, so together they do 3 units a day. The work = 3 × 29 = 87 units, and Kamal alone needs 87 ÷ 1 = 87 days.