Sean had $47.20 more than Eric. After Eric had spent
27 of his money, Sean had $70.80 more than Eric. How much money did Sean have at first?
|
Sean |
Eric |
More |
Before |
7 u + $47.20 |
7 u |
$47.20 |
Change |
|
- 2 u |
|
After |
7 u + $47.20 |
5 u |
2 u + $47.20 |
Sean had $70.80 more than Eric in the end.
7 u + 47.20 - 5 u = 70.80
2 u + 47.20 = 70.80
2 u = 70.80 - 47.20
2 u = 23.60
1 u = 23.60 ÷ 2 = 11.80
Amount that Sean had at first
= 7 u + 47.20
= 7 x 11.80 + 47.20
= 82.60 + 47.20
= $129.80
Answer(s): $129.80