Question

A can do a piece of work in 24 days. If B is 60% more
efficient than A, then the number of days required by
B to do the twice as large as the earlier work is [1]
(a) 24 (b) 36
(c) 15 (d) 30

can any one of u explain it properly ?

Answer 1

Answer:

Step-by-step explanation: Given that A can do a piece of work in 24 days and B is 60%  more  efficient than A.

So, the number of days required by B to complete the same work = 24/1.6 = 15

So, to complete the twice the work, required days = 2 x 15 = 30

Hence, option (d) is correct.