Kamal can do a piece of work in 15 days. Bimal is 50 per cent more efficient than Kamal in doing the work . In how many days will Bimal do that work ?

Explanation:

ATQ,

If kamal is 100% efficient, then Bimal 150 % efficient (50 % more),

[B\K=150\100=3\2]

Kamal Bimal

eiiiciency→2units/day 3units/day

Totalwork:15days×2units/day=30units

Bimal will do that work=30\3=10days