Riordan had 9 times as much money as Oliver. After Riordan had spent one-third of his money, he had $25 more than Oliver. How much money did Riordan have at first?
| |
Riordan |
Oliver |
| Before |
9 u |
1 u |
| Change |
- 3 u |
|
| After |
6 u |
1 u |
Amount that Riordan had after he spent one-third of his money
= 9 u ÷ 3
= 3 u
Amount that Riordan had more than Oliver in the end
= 6 u - 1 u
= 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
Amount that Riordan had at first
= 9 u
= 9 x 25
= $225
Answer(s): $225
