Michael had $2.10 less than Justin. After Michael gave $2.40 to Justin, Justin would have four times as much money as Michael. How much money had Justin at first?
| |
Justin |
Michael |
| Before |
4 u - $2.40 |
1 u + $2.40 |
| Change |
+ $2.40 |
- $2.40 |
| After |
4 u |
1 u |
Michael had $2.10 less than Justin. If another $2.10 was given to Michael, Justin and Michael would have the same amount at first.
4 u - 2.40 = 1 u + 2.40 + 2.10
4 u - 1 u = 2.40 + 2.10 + 2.40
3 u = 6.90
1 u = 6.90 ÷ 3 = 2.30
Amount that Justin had at first
= 4 u - 2.40
= 4 x 2.30 + 2.40
= 9.20 + 2.40
= $11.60
Answer(s): $11.60
