Ivory had
47 as much money as Yen. Ivory had $36 less than Yen. Ivory spent some money to buy a birthday present for her best friend. In the end, she had
14 as much money as Yen. How much did Ivory spend on the birthday present?
| |
Ivory |
Yen |
| Before |
4 u |
7 u |
| Change |
- ? |
|
| After |
1 p |
4 p |
Amount that Ivory had less than Yen
= 7 u - 4 u
= 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Amount that Ivory had at first
= 4 u
= 4 x 12
= $48
Amount that Yen had
= 7 u
= 7 x 12
= $84
The amount that Yen had at first and in the end remains the same.
7 u = 4 p
4 p = 84
1 p = 84 ÷ 4 = 21
Amount that Ivory had in the end
= 1 p
= $21
Amount that Ivory spent on the birthday present
= 48 - 21
= $27
Answer(s): $27
