Cathy had $12 more than Julie at first. After Cathy and Julie spent an equal amount of money, Julie had
57 as much as Cathy. How much money did Cathy have left?
| |
Cathy |
Julie |
Difference |
| Before |
1 u + $12 |
1 u |
$12 |
| Change |
- 1 |
- 1 |
|
| After |
7 p |
5 p |
2 p |
Difference in the amounts between Cathy and Julie
= 7 p - 5 p
= 2 p
Since both Cathy and Julie spent an equal amount, the difference in the amounts that Cathy and Julie had at first and in the end remains unchanged.
2 p = 12
1 p = 12 ÷ 2 = 6
Amount that Cathy had left
= 7 p
= 7 x 6
= $42
Answer(s): $42
