Perry had $42 more than Cole. Every day, Perry and Cole would spend an equal amount of money. After 4 days, Perry was left with 2 times as much money as Cole. Given that Perry had $120 at first, how much did each of them spend every day?
| |
Cole |
Perry |
Difference |
| Before |
|
$120 |
$42 |
| Change |
- ? |
- ? |
|
| After |
1 u |
2 u |
1 u |
Since both Perry and Cole spent an equal amount of money every day, the difference in their amounts remains the same.
Difference in their amounts
= 2 u - 1 u
= 1 u
1 u = 42
1 u = 42 ÷ 1 = 42
Amount that Perry had in the end
= 2 u
= 2 x 42
= $84
Amount that Perry had spent
= 120 - 84
= $36
Amount that each of them spent every day
= 36 ÷ 4
= $9
Answer(s): $9
