Penelope had $15 less than Julie at first. After Julie and Penelope spent an equal amount of money, Penelope had
47 as much as Julie. How much money did Penelope have left?
| |
Penelope |
Julie |
Difference |
| Before |
1 u |
1 u + $15 |
$15 |
| Change |
- 1 |
- 1 |
|
| After |
4 p |
7 p |
3 p |
Difference in the amounts between Julie and Penelope
= 7 p - 4 p
= 3 p
Since both Julie and Penelope spent an equal amount, the difference in the amounts that Julie and Penelope had at first and in the end remains unchanged.
3 p = 15
1 p = 15 ÷ 3 = 5
Amount that Penelope had left
= 4 p
= 4 x 5
= $20
Answer(s): $20
