Victoria had
310 as much money as Kathy. Victoria had $35 less than Kathy. Victoria spent some money to buy a birthday present for her cousin. In the end, she had
15 as much money as Kathy. How much did Victoria spend on the birthday present?
|
Victoria |
Kathy |
Before |
3 u |
10 u |
Change |
- ? |
|
After |
1 p |
5 p |
Amount that Victoria had less than Kathy
= 10 u - 3 u
= 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Amount that Victoria had at first
= 3 u
= 3 x 5
= $15
Amount that Kathy had
= 10 u
= 10 x 5
= $50
The amount that Kathy had at first and in the end remains the same.
10 u = 5 p
5 p = 50
1 p = 50 ÷ 5 = 10
Amount that Victoria had in the end
= 1 p
= $10
Amount that Victoria spent on the birthday present
= 15 - 10
= $5
Answer(s): $5