Risa had $15 more than Anna at first. After Risa and Anna spent an equal amount of money, Anna had
38 as much as Risa. How much money did Risa have left?
|
Risa |
Anna |
Difference |
Before |
1 u + $15 |
1 u |
$15 |
Change |
- 1 |
- 1 |
|
After |
8 p |
3 p |
5 p |
Difference in the amounts between Risa and Anna
= 8 p - 3 p
= 5 p
Since both Risa and Anna spent an equal amount, the difference in the amounts that Risa and Anna had at first and in the end remains unchanged.
5 p = 15
1 p = 15 ÷ 5 = 3
Amount that Risa had left
= 8 p
= 8 x 3
= $24
Answer(s): $24