Justin had $7.40 less than Charlie. After Justin gave $3.50 to Charlie, Charlie would have four times as much money as Justin. How much money had Charlie at first?
| |
Charlie |
Justin |
| Before |
4 u - $3.50 |
1 u + $3.50 |
| Change |
+ $3.50 |
- $3.50 |
| After |
4 u |
1 u |
Justin had $7.40 less than Charlie. If another $7.40 was given to Justin, Charlie and Justin would have the same amount at first.
4 u - 3.50 = 1 u + 3.50 + 7.40
4 u - 1 u = 3.50 + 7.40 + 3.50
3 u = 14.40
1 u = 14.40 ÷ 3 = 4.80
Amount that Charlie had at first
= 4 u - 3.50
= 4 x 4.80 + 3.50
= 19.20 + 3.50
= $22.70
Answer(s): $22.70
