Vanessa, Jean and Shannon had a sum of money. The amount of money Vanessa had was
23 of the amount of money Jean had. The ratio of the amount of money Jean had to the total amount of money Shannon and Jean had was 4: 9. After Shannon gave $33 to Jean, she had as much money as Jean. How much more money did Shannon have than Vanessa in the end?
Vanessa |
Jean |
Shannon |
2x4 = 8 u |
3x4 = 12 u |
|
|
4x3 = 12 u |
5x3 = 15 u |
8 u |
12 u |
15 u |
The amount that Jean had is the repeated identity. Make the amount that Jean had the same. LCM of 3 and 4 is 12.
|
Vanessa |
Jean |
Shannon |
Before |
8 u |
12 u |
15 u |
Change |
No change |
+ 33 |
- 33 |
After |
8 u |
12 u + 33 |
15 u - 33 |
The amount that Shannon and Jean had in the end is the same.
15 u - 33 = 12 u + 33
15 u - 12 u = 33 + 33
3 u = 66
1 u = 66 ÷ 3 = 22
Amount that Shannon had more than Vanessa in the end
= 15 u - 33 - 8 u
= 7 u - 33
= 7 x 22 - 33
= 154 - 33
= $121
Answer(s): $121