Question

Look at the image attached below.

Answer 1

1/2

Explanation:

1/5 of 5/4 is 1/4 so 2/5 of 5/4 is 1/2

Answer 2

Explanation:

Step 1: Subtract the first part

`1(1)/(2) - (1)/(4)`

`(3)/(2) - (1)/(4)`

`(6)/(4)-(1)/(4)`

`(5)/(4)`

Step 2: Multiply both to get how much the brother drank

`(5)/(4) * (2)/(5)`

`(2)/(4)`

`(1)/(2) \ L`

Answer: 1/2 Liters