Oliver had $56.30 more than Harry. After Harry had spent
79 of his money, Oliver had $122.10 more than Harry. How much money did Oliver have at first?
|
Oliver |
Harry |
More |
Before |
9 u + $56.30 |
9 u |
$56.30 |
Change |
|
- 7 u |
|
After |
9 u + $56.30 |
2 u |
7 u + $56.30 |
Oliver had $122.10 more than Harry in the end.
9 u + 56.30 - 2 u = 122.10
7 u + 56.30 = 122.10
7 u = 122.10 - 56.30
7 u = 65.80
1 u = 65.80 ÷ 7 = 9.40
Amount that Oliver had at first
= 9 u + 56.30
= 9 x 9.40 + 56.30
= 84.60 + 56.30
= $140.90
Answer(s): $140.90