Question

manish and rohit complete a work in 20 days. rohit alone can do one fourth of the work in 15 days. In how many days will manish alone can complete a work​

Answer 1

Answer:

So in one day, A can do 1/15 th of total work.

In 8 days, A did 1/15 * 8 = 8/15 th of total work.

Remaining work 1 - 8/15 = 7/15

A+B did 7/15 th work in 4 days

Out of 7/15 , 4/15 th work was done by A

So all in all, in 4 days, B did 3/15 th of total work.

And in one day B can do 3/60 th of total work.

So B will require 60/3 =20 days to complete the work alone.