Tim had $124 more than Sean. After Sean gave $131 to Tim, Tim had 3 times as much money as Sean. How much money did Tim have at first?
| |
Tim |
Sean |
Comparing between
Tim and Sean
at first |
$124 more |
|
| Before |
3 u - $131 |
1 u + $131 |
| Change |
+ $131 |
- $131 |
| After |
3 u |
1 u |
Tim had $124 more than Sean at first. If Sean had another $124 at first, both of them would had the same amount of money.
3 u - 131 = 1 u + 131 + 124
3 u - 131 = 1 u + 255
3 u - 1 u = 131 + 255
2 u = 386
1 u = 386 ÷ 2 = 193
Amount that Tim had at first
= 3 u - 131
= 3 x 193 - 131
= 579 - 131
= $448
Answer(s): $448
