Emma had
47 as much money as Jade. Emma had $36 less than Jade. Emma spent some money to buy a birthday present for her cousin. In the end, she had
13 as much money as Jade. How much did Emma spend on the birthday present?
| |
Emma |
Jade |
| Before |
4 u |
7 u |
| Change |
- ? |
|
| After |
1 p |
3 p |
Amount that Emma had less than Jade
= 7 u - 4 u
= 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Amount that Emma had at first
= 4 u
= 4 x 12
= $48
Amount that Jade had
= 7 u
= 7 x 12
= $84
The amount that Jade had at first and in the end remains the same.
7 u = 3 p
3 p = 84
1 p = 84 ÷ 3 = 28
Amount that Emma had in the end
= 1 p
= $28
Amount that Emma spent on the birthday present
= 48 - 28
= $20
Answer(s): $20
