Cathy had $8 less than Zara at first. After Zara and Cathy spent an equal amount of money, Cathy had
57 as much as Zara. How much money did Cathy have left?
| |
Cathy |
Zara |
Difference |
| Before |
1 u |
1 u + $8 |
$8 |
| Change |
- 1 |
- 1 |
|
| After |
5 p |
7 p |
2 p |
Difference in the amounts between Zara and Cathy
= 7 p - 5 p
= 2 p
Since both Zara and Cathy spent an equal amount, the difference in the amounts that Zara and Cathy had at first and in the end remains unchanged.
2 p = 8
1 p = 8 ÷ 2 = 4
Amount that Cathy had left
= 5 p
= 5 x 4
= $20
Answer(s): $20
