Riordan and Peter had a total of $120. Riordan gave $10 to Peter. In return, Peter gave $28 to Riordan. In the end, Riordan had $14 more than Peter. How much money did Riordan have at first?
| |
Riordan |
Peter |
Total |
| Before |
? |
|
$120 |
| Change 1 |
- $10 |
+ $10 |
|
| Change 2 |
+ $28 |
- $28 |
|
| After |
1 u + $14 |
1 u |
$120 |
Total amount that Riordan and Peter had
= 1 u + 1 u + $14
= 2 u + 14
2 u + 14 = 120
2 u = 120 - 14
2 u = 106
1 u = 106 ÷ 2 = 53
Amount that Riordan had in the end
= 1 u + 14
= 53 + 14
= $67
Amount that Riordan had at first
= 67 - 28 + 10
= $49
Answer(s): $49
