Ian had $7.20 less than Sean. After Ian gave $1.80 to Sean, Sean would have five times as much money as Ian. How much money had Sean at first?
| |
Sean |
Ian |
| Before |
5 u - $1.80 |
1 u + $1.80 |
| Change |
+ $1.80 |
- $1.80 |
| After |
5 u |
1 u |
Ian had $7.20 less than Sean. If another $7.20 was given to Ian, Sean and Ian would have the same amount at first.
5 u - 1.80 = 1 u + 1.80 + 7.20
5 u - 1 u = 1.80 + 7.20 + 1.80
4 u = 10.80
1 u = 10.80 ÷ 4 = 2.70
Amount that Sean had at first
= 5 u - 1.80
= 5 x 2.70 + 1.80
= 13.50 + 1.80
= $15.30
Answer(s): $15.30
