Tommy had $24 more than Lee. Every day, Tommy and Lee would spend an equal amount of money. After 9 days, Tommy was left with 2 times as much money as Lee. Given that Tommy had $138 at first, how much did each of them spend every day?
| |
Lee |
Tommy |
Difference |
| Before |
|
$138 |
$24 |
| Change |
- ? |
- ? |
|
| After |
1 u |
2 u |
1 u |
Since both Tommy and Lee 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 = 24
1 u = 24 ÷ 1 = 24
Amount that Tommy had in the end
= 2 u
= 2 x 24
= $48
Amount that Tommy had spent
= 138 - 48
= $90
Amount that each of them spent every day
= 90 ÷ 9
= $10
Answer(s): $10
