Justin had $4.60 less than Ethan. After Justin gave $1.50 to Ethan, Ethan would have thrice as much money as Justin. How much money had Ethan at first?
| |
Ethan |
Justin |
| Before |
3 u - $1.50 |
1 u + $1.50 |
| Change |
+ $1.50 |
- $1.50 |
| After |
3 u |
1 u |
Justin had $4.60 less than Ethan. If another $4.60 was given to Justin, Ethan and Justin would have the same amount at first.
3 u - 1.50 = 1 u + 1.50 + 4.60
3 u - 1 u = 1.50 + 4.60 + 1.50
2 u = 7.60
1 u = 7.60 ÷ 2 = 3.80
Amount that Ethan had at first
= 3 u - 1.50
= 3 x 3.80 + 1.50
= 11.40 + 1.50
= $12.90
Answer(s): $12.90
