Kimberly had $9 less than Risa at first. After Risa and Kimberly spent an equal amount of money, Kimberly had
47 as much as Risa. How much money did Kimberly have left?
| |
Kimberly |
Risa |
Difference |
| Before |
1 u |
1 u + $9 |
$9 |
| Change |
- 1 |
- 1 |
|
| After |
4 p |
7 p |
3 p |
Difference in the amounts between Risa and Kimberly
= 7 p - 4 p
= 3 p
Since both Risa and Kimberly spent an equal amount, the difference in the amounts that Risa and Kimberly had at first and in the end remains unchanged.
3 p = 9
1 p = 9 ÷ 3 = 3
Amount that Kimberly had left
= 4 p
= 4 x 3
= $12
Answer(s): $12
