Riordan had $55.90 more than Archie. After Archie had spent
49 of his money, Riordan had $90.30 more than Archie. How much money did Riordan have at first?
| |
Riordan |
Archie |
More |
| Before |
9 u + $55.90 |
9 u |
$55.90 |
| Change |
|
- 4 u |
|
| After |
9 u + $55.90 |
5 u |
4 u + $55.90 |
Riordan had $90.30 more than Archie in the end.
9 u + 55.90 - 5 u = 90.30
4 u + 55.90 = 90.30
4 u = 90.30 - 55.90
4 u = 34.40
1 u = 34.40 ÷ 4 = 8.60
Amount that Riordan had at first
= 9 u + 55.90
= 9 x 8.60 + 55.90
= 77.40 + 55.90
= $133.30
Answer(s): $133.30
