Luis and Luke had a total of $166. Luis gave $12 to Luke. In return, Luke gave $39 to Luis. In the end, Luis had $34 more than Luke. How much money did Luis have at first?
| |
Luis |
Luke |
Total |
| Before |
? |
|
$166 |
| Change 1 |
- $12 |
+ $12 |
|
| Change 2 |
+ $39 |
- $39 |
|
| After |
1 u + $34 |
1 u |
$166 |
Total amount that Luis and Luke had
= 1 u + 1 u + $34
= 2 u + 34
2 u + 34 = 166
2 u = 166 - 34
2 u = 132
1 u = 132 ÷ 2 = 66
Amount that Luis had in the end
= 1 u + 34
= 66 + 34
= $100
Amount that Luis had at first
= 100 - 39 + 12
= $73
Answer(s): $73
