At first, David had $138 and Caden had $102. Each of them bought a cardigan at the same price. David now has four times as much money as Caden. How much did each of them pay for the cardigan?
| |
David |
Caden |
Difference |
| Before |
$138 |
$102 |
$36 |
| Change |
- ? |
- ? |
|
| After |
4 u |
1 u |
3 u |
Since David and Caden each bought a cardigan at the same price, the difference in the amounts each had remains the same.
Difference in the amounts between David and Caden
= 4 u - 1 u
= 3 u
3 u = 138 - 102
3 u = 36
1 u = 36 ÷ 3 = 12
Amount that each of them paid for the cardigan
= 102 - 12
= $90
Answer(s): $90
