Xuan had
47 as much money as Raeann. Xuan had $45 less than Raeann. Xuan spent some money to buy a birthday present for her buddy. In the end, she had
15 as much money as Raeann. How much did Xuan spend on the birthday present?
| |
Xuan |
Raeann |
| Before |
4 u |
7 u |
| Change |
- ? |
|
| After |
1 p |
5 p |
Amount that Xuan had less than Raeann
= 7 u - 4 u
= 3 u
3 u = 45
1 u = 45 ÷ 3 = 15
Amount that Xuan had at first
= 4 u
= 4 x 15
= $60
Amount that Raeann had
= 7 u
= 7 x 15
= $105
The amount that Raeann had at first and in the end remains the same.
7 u = 5 p
5 p = 105
1 p = 105 ÷ 5 = 21
Amount that Xuan had in the end
= 1 p
= $21
Amount that Xuan spent on the birthday present
= 60 - 21
= $39
Answer(s): $39
