Question

To complete a work, A takes 50%more time than B. If together they take 18 days to complete the work,then how much time will B take to
do it?
(a) 30 days (b) 35 days
(c) 40 days
(d) 45 days
​

Answer 1

Answer=30 days.

Step-by-step explanation:

The ratio between their times is:

A:B = 150 % / 100% = 3:2

efficiency of work =2:3(Efficiency is always inversely proportion to time).

So, total work = (18 days *2+3) units

                       = (18*5) units

                       = 90 units.

Then, B completes work in:

= 90 units/3 units per day

= 30 days.

Hence,  the 30 days taken by B to complete work.