Sarah had
35 as much money as Vanessa. Sarah had $48 less than Vanessa. Sarah spent some money to buy a birthday present for her cousin. In the end, she had
18 as much money as Vanessa. How much did Sarah spend on the birthday present?
| |
Sarah |
Vanessa |
| Before |
3 u |
5 u |
| Change |
- ? |
|
| After |
1 p |
8 p |
Amount that Sarah had less than Vanessa
= 5 u - 3 u
= 2 u
2 u = 48
1 u = 48 ÷ 2 = 24
Amount that Sarah had at first
= 3 u
= 3 x 24
= $72
Amount that Vanessa had
= 5 u
= 5 x 24
= $120
The amount that Vanessa had at first and in the end remains the same.
5 u = 8 p
8 p = 120
1 p = 120 ÷ 8 = 15
Amount that Sarah had in the end
= 1 p
= $15
Amount that Sarah spent on the birthday present
= 72 - 15
= $57
Answer(s): $57
