Gillian had $21 less than Shiyun at first. After Shiyun and Gillian spent an equal amount of money, Gillian had
58 as much as Shiyun. How much money did Gillian have left?
| |
Gillian |
Shiyun |
Difference |
| Before |
1 u |
1 u + $21 |
$21 |
| Change |
- 1 |
- 1 |
|
| After |
5 p |
8 p |
3 p |
Difference in the amounts between Shiyun and Gillian
= 8 p - 5 p
= 3 p
Since both Shiyun and Gillian spent an equal amount, the difference in the amounts that Shiyun and Gillian had at first and in the end remains unchanged.
3 p = 21
1 p = 21 ÷ 3 = 7
Amount that Gillian had left
= 5 p
= 5 x 7
= $35
Answer(s): $35
