Riordan had $49 more than Sean. After each of them bought an identical shirt from a shop. Riordan was left with 8 times as much money as Sean. Given that Riordan had $84 at first, how much did each shirt cost?
| |
Riordan |
Sean |
Difference |
| Before |
$84 |
|
$49 |
| Change |
- 1 shirt |
- 1 shirt |
|
| After |
8 u |
1 u |
7 u |
Since Riordan and Sean each bought an identical shirt, the difference in amount that they had at first and in the end remains the same.
7 u = 49
1 u = 49 ÷ 7 = 7
Amount that Riordan had left
= 8 u
= 8 x 7
= $56
Cost of the shirt
= 84 - 56
= $28
Answer(s): $28
