Question

Ebenezer spent 3/8 of his allowance on Saturday and 1/5 on Sunday. What fraction of his allowance did he spend?

Answer 1

He spent
`(23)/(40)` of his allowance

Explanation:

The fraction Ebenezer spent on allowance is on Saturday is
`(3)/(8)`

The fraction he spent on Sunday is
`(1)/(5)`

The fraction of his allowance he spent is the fraction he spent on Saturday plus the fraction he spent on Sunday.

`=(3)/(8)+(1)/(5)`

The LCD is

`=(3* 5+8*1)/(40)`

`=(15+8)/(40)`

`=(23)/(40)`