Paul had $51.20 more than Perry. After Perry had spent
37 of his money, Paul had $68.90 more than Perry. How much money did Paul have at first?
|
Paul |
Perry |
More |
Before |
7 u + $51.20 |
7 u |
$51.20 |
Change |
|
- 3 u |
|
After |
7 u + $51.20 |
4 u |
3 u + $51.20 |
Paul had $68.90 more than Perry in the end.
7 u + 51.20 - 4 u = 68.90
3 u + 51.20 = 68.90
3 u = 68.90 - 51.20
3 u = 17.70
1 u = 17.70 ÷ 3 = 5.90
Amount that Paul had at first
= 7 u + 51.20
= 7 x 5.90 + 51.20
= 41.30 + 51.20
= $92.50
Answer(s): $92.50