Eva had
49 as much money as Victoria. Eva had $50 less than Victoria. Eva spent some money to buy a birthday present for her cousin. In the end, she had
110 as much money as Victoria. How much did Eva spend on the birthday present?
| |
Eva |
Victoria |
| Before |
4 u |
9 u |
| Change |
- ? |
|
| After |
1 p |
10 p |
Amount that Eva had less than Victoria
= 9 u - 4 u
= 5 u
5 u = 50
1 u = 50 ÷ 5 = 10
Amount that Eva had at first
= 4 u
= 4 x 10
= $40
Amount that Victoria had
= 9 u
= 9 x 10
= $90
The amount that Victoria had at first and in the end remains the same.
9 u = 10 p
10 p = 90
1 p = 90 ÷ 10 = 9
Amount that Eva had in the end
= 1 p
= $9
Amount that Eva spent on the birthday present
= 40 - 9
= $31
Answer(s): $31
