John had $5.20 less than Cody. After John gave $1.30 to Cody, Cody would have four times as much money as John. How much money had Cody at first?
| |
Cody |
John |
| Before |
4 u - $1.30 |
1 u + $1.30 |
| Change |
+ $1.30 |
- $1.30 |
| After |
4 u |
1 u |
John had $5.20 less than Cody. If another $5.20 was given to John, Cody and John would have the same amount at first.
4 u - 1.30 = 1 u + 1.30 + 5.20
4 u - 1 u = 1.30 + 5.20 + 1.30
3 u = 7.80
1 u = 7.80 ÷ 3 = 2.60
Amount that Cody had at first
= 4 u - 1.30
= 4 x 2.60 + 1.30
= 10.40 + 1.30
= $11.70
Answer(s): $11.70
