Question

A and B can together complete a work in 10 days. A alone can do it in 18 days. How long would B
alone take to complete the work?

Answer 1

Step-by-step explanation:

In 10 days A + B can so = 1 work

In 1 day A+B can do = 1/10 work

In 15 days A can do = 1 work

In 1 day A can do = 1/15 work

Let in x days B can do = 1 work

so in 1day B can do 1/x work

In 1 day A+B can do = 1/10 work

1/15 + 1/x = 1/10

1/x = 1/10 - 1/15

1/x = 1/30

x = 30