Question

A can do a piece of work in 15 days. B is 50% more efficient than A . In how many day B can finish the work ?

Answer 1

Since B is 50% more efficient than A. So this implies that A takes 50% more time than B.

Because efficiency and time taken is inversely proportional to each other.

Hence 15 days is 50% more than the time taken by B.

So 15 = 150% of B

B = 15*(100/150) = 10days.

Answer 2

Hope that this will help you