Paul had $7.40 less than Ken. After Paul gave $2.60 to Ken, Ken would have four times as much money as Paul. How much money had Ken at first?
| |
Ken |
Paul |
| Before |
4 u - $2.60 |
1 u + $2.60 |
| Change |
+ $2.60 |
- $2.60 |
| After |
4 u |
1 u |
Paul had $7.40 less than Ken. If another $7.40 was given to Paul, Ken and Paul would have the same amount at first.
4 u - 2.60 = 1 u + 2.60 + 7.40
4 u - 1 u = 2.60 + 7.40 + 2.60
3 u = 12.60
1 u = 12.60 ÷ 3 = 4.20
Amount that Ken had at first
= 4 u - 2.60
= 4 x 4.20 + 2.60
= 16.80 + 2.60
= $19.40
Answer(s): $19.40
