Amelia and Riordan shared $36 equally. How much money must Amelia give to Riordan so that Riordan will have three times as much money as Amelia?
| |
Amelia |
Riordan |
Total |
| Before |
18 |
18 |
36 |
| Change |
- 9 |
+ 9 |
|
| After |
1 u |
3 u |
36 |
Amount that each of them had at first
= 36 ÷ 2
= $18
Amount that Amelia had = 1 u
Amount that Riordan had = 3 u
Total amount that Amelia and Riordan
= 1 u + 3 u
= 4 u
4 u = 36
1 u = 36 ÷ 4 = 9
Amount that Amelia must give to Riordan
= 18 - 9
= $9
Answer(s): $9
