Question

A does half as much work as B in three fourth of the time. if they together take 18 days to complete the work,how much time will B take to do it?​

Answer 1

Step-by-step explanation:

Let time taken by B to complete work = 4x Then A can do 1/2 work in 3x time.

So time taken by A to complete work = 6x

Let total work = 12 x ( LCM of both)

efficiency of A = 2

Efficiency of B = 3

12x/5 = 18 ; So x = 15/2

Total work = 12*15/2 = 90

Time taken by B to do it = 90/3 = 30 days