Gabby had $4 more than Shiyun at first. After Gabby and Shiyun spent an equal amount of money, Shiyun had
57 as much as Gabby. How much money did Gabby have left?
| |
Gabby |
Shiyun |
Difference |
| Before |
1 u + $4 |
1 u |
$4 |
| Change |
- 1 |
- 1 |
|
| After |
7 p |
5 p |
2 p |
Difference in the amounts between Gabby and Shiyun
= 7 p - 5 p
= 2 p
Since both Gabby and Shiyun spent an equal amount, the difference in the amounts that Gabby and Shiyun had at first and in the end remains unchanged.
2 p = 4
1 p = 4 ÷ 2 = 2
Amount that Gabby had left
= 7 p
= 7 x 2
= $14
Answer(s): $14
