Question

A can do a piece of work in 25 days and B can finish the same work in
20 days. They worked together for 5 days and then A leaves. In how
many days will B finish the remaining work?
(2)​

Answer 1

Step-by-step explanation:

A wiil do 1/5 of the work in 5 days

B will do 1/4 of the work in 5 days

subsituting values to B's work

1/5 of 20=4

1/4 of 20=5

total days of together work=4+5=9

days meeded for B to complete work=20-9=11