Eric had $84.90 more than Riordan. After Riordan had spent
37 of his money, Eric had $104.70 more than Riordan. How much money did Eric have at first?
|
Eric |
Riordan |
More |
Before |
7 u + $84.90 |
7 u |
$84.90 |
Change |
|
- 3 u |
|
After |
7 u + $84.90 |
4 u |
3 u + $84.90 |
Eric had $104.70 more than Riordan in the end.
7 u + 84.90 - 4 u = 104.70
3 u + 84.90 = 104.70
3 u = 104.70 - 84.90
3 u = 19.80
1 u = 19.80 ÷ 3 = 6.60
Amount that Eric had at first
= 7 u + 84.90
= 7 x 6.60 + 84.90
= 46.20 + 84.90
= $131.10
Answer(s): $131.10