Dana had
27 as much money as Kylie. Dana had $40 less than Kylie. Dana spent some money to buy a birthday present for her father. In the end, she had
14 as much money as Kylie. How much did Dana spend on the birthday present?
| |
Dana |
Kylie |
| Before |
2 u |
7 u |
| Change |
- ? |
|
| After |
1 p |
4 p |
Amount that Dana had less than Kylie
= 7 u - 2 u
= 5 u
5 u = 40
1 u = 40 ÷ 5 = 8
Amount that Dana had at first
= 2 u
= 2 x 8
= $16
Amount that Kylie had
= 7 u
= 7 x 8
= $56
The amount that Kylie had at first and in the end remains the same.
7 u = 4 p
4 p = 56
1 p = 56 ÷ 4 = 14
Amount that Dana had in the end
= 1 p
= $14
Amount that Dana spent on the birthday present
= 16 - 14
= $2
Answer(s): $2
