Oscar had three times as much money as Warren. After Oscar spent $129 and Warren spent $39, they had the same amount of money left.
- How much did Warren have at first?
- How much had each of them left in the end?
|
Oscar |
Warren |
Before |
3 u |
1 u |
Change |
- 129 |
- 39 |
After |
3 u - 129 |
1 u - 39 |
The amounts that Oscar and Warren had left in the end is the same.
3 u - 129 = 1 u - 39
3 u - 1 u = 129 - 39
2 u = 90
1 u = 90 ÷ 2 = 45
Amount that Warren had at first
= 1 u
= $45
(a)
Amount that each of them had in the end
= 45 - 39
= $6
Answer(s): (a) $45; (b) $6