George had $57.30 more than Ian. After Ian had spent
27 of his money, George had $78.50 more than Ian. How much money did George have at first?
| |
George |
Ian |
More |
| Before |
7 u + $57.30 |
7 u |
$57.30 |
| Change |
|
- 2 u |
|
| After |
7 u + $57.30 |
5 u |
2 u + $57.30 |
George had $78.50 more than Ian in the end.
7 u + 57.30 - 5 u = 78.50
2 u + 57.30 = 78.50
2 u = 78.50 - 57.30
2 u = 21.20
1 u = 21.20 ÷ 2 = 10.60
Amount that George had at first
= 7 u + 57.30
= 7 x 10.60 + 57.30
= 74.20 + 57.30
= $131.50
Answer(s): $131.50
