Ryan and Billy had a total of $105. Ryan gave $17 to Billy. In return, Billy gave $27 to Ryan. In the end, Ryan had $31 more than Billy. How much money did Ryan have at first?
| |
Ryan |
Billy |
Total |
| Before |
? |
|
$105 |
| Change 1 |
- $17 |
+ $17 |
|
| Change 2 |
+ $27 |
- $27 |
|
| After |
1 u + $31 |
1 u |
$105 |
Total amount that Ryan and Billy had
= 1 u + 1 u + $31
= 2 u + 31
2 u + 31 = 105
2 u = 105 - 31
2 u = 74
1 u = 74 ÷ 2 = 37
Amount that Ryan had in the end
= 1 u + 31
= 37 + 31
= $68
Amount that Ryan had at first
= 68 - 27 + 17
= $58
Answer(s): $58
