William had
13 as much money as Olivia at first. After William received $259 and Olivia received $81, both of them had the same amount of money. How much did Olivia have at first?
| |
William |
Olivia |
| Before |
1 u |
3 u |
| Change |
+ 259 |
+ 81 |
| After |
1 u + 259 |
3 u + 81 |
The amount that William and Olivia had in the end is the same.
1 u + 259 = 3 u + 81
3 u - 1 u = 259 - 81 = 178
2 u = 178
1 u = 178 ÷ 2 = 89
Amount that Olivia had at first
= 3 u
= 3 x 89
= $267
Answer(s): $267
