# George does 3/5^{th} of a piece of work in 9 days. He then calls Paul and they finish the work in 4 days. How long would Paul take to do the work by himself ?

George does 3/5^{th} of a piece of work in 9 days. He then calls Paul and they finish the work in 4 days. How long would Paul take to do the work by himself ?

A . 28

B . 32

C . 30

D . 35

**Answer : **C . 30

## Explanation:

George 9 days work = 3/5

George 1 days work = 3/5 * 9

= 1/15.

George and Paul 4 days work = 2/5

George and Paul 1 days work = 2/5 * 4

= 1/10.

Paul 1 days work = George and Paul 1 days work - George 1 days work

= 1/10 - 1/15

= 1/30

So Paul takes **30 days** to complete work.