Cody had $68.10 more than Riordan. After Riordan had spent
25 of his money, Cody had $85.90 more than Riordan. How much money did Cody have at first?
| |
Cody |
Riordan |
More |
| Before |
5 u + $68.10 |
5 u |
$68.10 |
| Change |
|
- 2 u |
|
| After |
5 u + $68.10 |
3 u |
2 u + $68.10 |
Cody had $85.90 more than Riordan in the end.
5 u + 68.10 - 3 u = 85.90
2 u + 68.10 = 85.90
2 u = 85.90 - 68.10
2 u = 17.80
1 u = 17.80 ÷ 2 = 8.90
Amount that Cody had at first
= 5 u + 68.10
= 5 x 8.90 + 68.10
= 44.50 + 68.10
= $112.60
Answer(s): $112.60
