Question 38

Two friends A and B working together can complete a piece of work in 16 days. A alone can do the same work in 32 days. If A and B work on alternate days, starting with B, the time (days) in which the work can be completed is


A and B together can do the work in 16 days.

So, in 1 day they together can do (1/16) part of the work.

A can do (1/32) part of work in 1 day.

So,B can do $$(1/16-1/32)=1/32$$ part of work in 1 day.

So,if B do work in alternative days then they together have to work for 32 days i.e.


D is correct choice.

Create a FREE account and get:

  • Download Maths Shortcuts PDF
  • Get 300+ previous papers with solutions PDF
  • 500+ Online Tests for Free


Boost your Prep!

Download App