Warren had $480 more than Oscar at first. Warren gave $80 to Oscar. As a result, Oscar has
59 as much money as Warren. How much money had each of them at first?
- Warren
- Oscar
| |
Warren |
Oscar |
More |
| Before |
9 u + $80 |
5 u - $80 |
$480 |
| Change |
- $80 |
+ $80 |
|
| After |
9 u |
5 u |
|
(a)
Warren had $480 more than Oscar at first. If Oscar received another $480, Warren and Oscar would have the same amount at first.
9 u + 80 = 5 u - 80 + 480
9 u + 80 = 5 u + 400
9 u - 5 u = 400 - 80
4 u = 320
1 u = 320 ÷ 4 = 80
Amount that Warren had at first
= 9 u + 80
= 9 x 80 + 80
= 720 + 80
= $800
(b)
Amount that Oscar had at first
= 5 u - 80
= 5 x 80 - 80
= 400 - 80
= $320
Answer(s): (a) $800; (b) $320
