Will had $2.80 less than Riordan. After Will gave $3.40 to Riordan, Riordan would have thrice as much money as Will. How much money had Riordan at first?
| |
Riordan |
Will |
| Before |
3 u - $3.40 |
1 u + $3.40 |
| Change |
+ $3.40 |
- $3.40 |
| After |
3 u |
1 u |
Will had $2.80 less than Riordan. If another $2.80 was given to Will, Riordan and Will would have the same amount at first.
3 u - 3.40 = 1 u + 3.40 + 2.80
3 u - 1 u = 3.40 + 2.80 + 3.40
2 u = 9.60
1 u = 9.60 ÷ 2 = 4.80
Amount that Riordan had at first
= 3 u - 3.40
= 3 x 4.80 + 3.40
= 14.40 + 3.40
= $17.80
Answer(s): $17.80
