Japheth had $2.80 less than Jack. After Japheth gave $3.30 to Jack, Jack would have thrice as much money as Japheth. How much money had Jack at first?
| |
Jack |
Japheth |
| Before |
3 u - $3.30 |
1 u + $3.30 |
| Change |
+ $3.30 |
- $3.30 |
| After |
3 u |
1 u |
Japheth had $2.80 less than Jack. If another $2.80 was given to Japheth, Jack and Japheth would have the same amount at first.
3 u - 3.30 = 1 u + 3.30 + 2.80
3 u - 1 u = 3.30 + 2.80 + 3.30
2 u = 9.40
1 u = 9.40 ÷ 2 = 4.70
Amount that Jack had at first
= 3 u - 3.30
= 3 x 4.70 + 3.30
= 14.10 + 3.30
= $17.40
Answer(s): $17.40
