Ken and Vincent had a total of $157. Ken gave $13 to Vincent. In return, Vincent gave $39 to Ken. In the end, Ken had $29 more than Vincent. How much money did Ken have at first?
| |
Ken |
Vincent |
Total |
| Before |
? |
|
$157 |
| Change 1 |
- $13 |
+ $13 |
|
| Change 2 |
+ $39 |
- $39 |
|
| After |
1 u + $29 |
1 u |
$157 |
Total amount that Ken and Vincent had
= 1 u + 1 u + $29
= 2 u + 29
2 u + 29 = 157
2 u = 157 - 29
2 u = 128
1 u = 128 ÷ 2 = 64
Amount that Ken had in the end
= 1 u + 29
= 64 + 29
= $93
Amount that Ken had at first
= 93 - 39 + 13
= $67
Answer(s): $67
