Risa had $36 less than Dana at first. After Dana and Risa spent an equal amount of money, Risa had
47 as much as Dana. How much money did Risa have left?
| |
Risa |
Dana |
Difference |
| Before |
1 u |
1 u + $36 |
$36 |
| Change |
- 1 |
- 1 |
|
| After |
4 p |
7 p |
3 p |
Difference in the amounts between Dana and Risa
= 7 p - 4 p
= 3 p
Since both Dana and Risa spent an equal amount, the difference in the amounts that Dana and Risa had at first and in the end remains unchanged.
3 p = 36
1 p = 36 ÷ 3 = 12
Amount that Risa had left
= 4 p
= 4 x 12
= $48
Answer(s): $48
