Olivia had $12 more than Usha at first. After Olivia and Usha spent an equal amount of money, Usha had
710 as much as Olivia. How much money did Olivia have left?
| |
Olivia |
Usha |
Difference |
| Before |
1 u + $12 |
1 u |
$12 |
| Change |
- 1 |
- 1 |
|
| After |
10 p |
7 p |
3 p |
Difference in the amounts between Olivia and Usha
= 10 p - 7 p
= 3 p
Since both Olivia and Usha spent an equal amount, the difference in the amounts that Olivia and Usha had at first and in the end remains unchanged.
3 p = 12
1 p = 12 ÷ 3 = 4
Amount that Olivia had left
= 10 p
= 10 x 4
= $40
Answer(s): $40
