Paul had $147 more than Ben. After Ben gave $138 to Paul, Paul had 4 times as much money as Ben. How much money did Paul have at first?
| |
Paul |
Ben |
Comparing between
Paul and Ben
at first |
$147 more |
|
| Before |
4 u - $138 |
1 u + $138 |
| Change |
+ $138 |
- $138 |
| After |
4 u |
1 u |
Paul had $147 more than Ben at first. If Ben had another $147 at first, both of them would had the same amount of money.
4 u - 138 = 1 u + 138 + 147
4 u - 138 = 1 u + 285
4 u - 1 u = 138 + 285
3 u = 423
1 u = 423 ÷ 3 = 141
Amount that Paul had at first
= 4 u - 138
= 4 x 141 - 138
= 564 - 138
= $426
Answer(s): $426
