Question

Acan do a piece of work in 30 days and B can do it in 20 days. they work together for 4 days and then B leave the job . in how many days, will A finish the remaining work?​

Answer 1

A does the work till the end and B does the work for 4 days only.

If the total work is finished in x days, then

So X/30 + 4/20 = 1

x = 24

So complete work is done in 24 days

A finished the remaining work in (24 - 4) = 20 days