Q12 of 28 Page 11

A and B can do a piece of work in 20 days and B in 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?

Given,


A and B can do a piece of work in = 20 days


B can do it in = 15 days


∴ A and B’s 1 day work =


B’s 1 day work =


∵ A and B work for 2 days, hence work done by them in 2 days =


Remaining work =


∵ B do work in = 1 day


B do 1 complete work in =


∴ B will do work in = days


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