Charlie had $138 more than Warren. After Warren gave $136 to Charlie, Charlie had 3 times as much money as Warren. How much money did Charlie have at first?
| |
Charlie |
Warren |
Comparing between
Charlie and Warren
at first |
$138 more |
|
| Before |
3 u - $136 |
1 u + $136 |
| Change |
+ $136 |
- $136 |
| After |
3 u |
1 u |
Charlie had $138 more than Warren at first. If Warren had another $138 at first, both of them would had the same amount of money.
3 u - 136 = 1 u + 136 + 138
3 u - 136 = 1 u + 274
3 u - 1 u = 136 + 274
2 u = 410
1 u = 410 ÷ 2 = 205
Amount that Charlie had at first
= 3 u - 136
= 3 x 205 - 136
= 615 - 136
= $479
Answer(s): $479
