Kylie had
37 as much money as Winnie. Kylie had $36 less than Winnie. Kylie spent some money to buy a birthday present for her cousin. In the end, she had
13 as much money as Winnie. How much did Kylie spend on the birthday present?
| |
Kylie |
Winnie |
| Before |
3 u |
7 u |
| Change |
- ? |
|
| After |
1 p |
3 p |
Amount that Kylie had less than Winnie
= 7 u - 3 u
= 4 u
4 u = 36
1 u = 36 ÷ 4 = 9
Amount that Kylie had at first
= 3 u
= 3 x 9
= $27
Amount that Winnie had
= 7 u
= 7 x 9
= $63
The amount that Winnie had at first and in the end remains the same.
7 u = 3 p
3 p = 63
1 p = 63 ÷ 3 = 21
Amount that Kylie had in the end
= 1 p
= $21
Amount that Kylie spent on the birthday present
= 27 - 21
= $6
Answer(s): $6
