Ben had $5.60 less than Pierre. After Ben gave $1.10 to Pierre, Pierre would have thrice as much money as Ben. How much money had Pierre at first?
| |
Pierre |
Ben |
| Before |
3 u - $1.10 |
1 u + $1.10 |
| Change |
+ $1.10 |
- $1.10 |
| After |
3 u |
1 u |
Ben had $5.60 less than Pierre. If another $5.60 was given to Ben, Pierre and Ben would have the same amount at first.
3 u - 1.10 = 1 u + 1.10 + 5.60
3 u - 1 u = 1.10 + 5.60 + 1.10
2 u = 7.80
1 u = 7.80 ÷ 2 = 3.90
Amount that Pierre had at first
= 3 u - 1.10
= 3 x 3.90 + 1.10
= 11.70 + 1.10
= $12.80
Answer(s): $12.80
