Samantha and Risa shared $72 equally. How much money must Samantha give to Risa so that Risa will have two times as much money as Samantha?
| |
Samantha |
Risa |
Total |
| Before |
36 |
36 |
72 |
| Change |
- 12 |
+ 12 |
|
| After |
1 u |
2 u |
72 |
Amount that each of them had at first
= 72 ÷ 2
= $36
Amount that Samantha had = 1 u
Amount that Risa had = 2 u
Total amount that Samantha and Risa
= 1 u + 2 u
= 3 u
3 u = 72
1 u = 72 ÷ 3 = 24
Amount that Samantha must give to Risa
= 36 - 24
= $12
Answer(s): $12
