Jack had $7.40 less than Carl. After Jack gave $3.50 to Carl, Carl would have four times as much money as Jack. How much money had Carl at first?
| |
Carl |
Jack |
| Before |
4 u - $3.50 |
1 u + $3.50 |
| Change |
+ $3.50 |
- $3.50 |
| After |
4 u |
1 u |
Jack had $7.40 less than Carl. If another $7.40 was given to Jack, Carl and Jack 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 Carl had at first
= 4 u - 3.50
= 4 x 4.80 + 3.50
= 19.20 + 3.50
= $22.70
Answer(s): $22.70
