Tom had $30.90 more than Valen. After Valen had spent
23 of his money, Tom had $52.10 more than Valen. How much money did Tom have at first?
| |
Tom |
Valen |
More |
| Before |
3 u + $30.90 |
3 u |
$30.90 |
| Change |
|
- 2 u |
|
| After |
3 u + $30.90 |
1 u |
2 u + $30.90 |
Tom had $52.10 more than Valen in the end.
3 u + 30.90 - 1 u = 52.10
2 u + 30.90 = 52.10
2 u = 52.10 - 30.90
2 u = 21.20
1 u = 21.20 ÷ 2 = 10.60
Amount that Tom had at first
= 3 u + 30.90
= 3 x 10.60 + 30.90
= 31.80 + 30.90
= $62.70
Answer(s): $62.70
