Riordan had $40 more than Ian. After each of them bought an identical sweater from a shop. Riordan was left with 6 times as much money as Ian. Given that Riordan had $75 at first, how much did each sweater cost?
| |
Riordan |
Ian |
Difference |
| Before |
$75 |
|
$40 |
| Change |
- 1 sweater |
- 1 sweater |
|
| After |
6 u |
1 u |
5 u |
Since Riordan and Ian each bought an identical sweater, the difference in amount that they had at first and in the end remains the same.
5 u = 40
1 u = 40 ÷ 5 = 8
Amount that Riordan had left
= 6 u
= 6 x 8
= $48
Cost of the sweater
= 75 - 48
= $27
Answer(s): $27
