Gillian, Kimberly and Fanny had a sum of money. The amount of money Gillian had was
34 of the amount of money Kimberly had. The ratio of the amount of money Kimberly had to the total amount of money Fanny and Kimberly had was 2: 7. After Fanny gave $57 to Kimberly, she had as much money as Kimberly. How much more money did Fanny have than Gillian in the end?
Gillian |
Kimberly |
Fanny |
3x1 = 3 u |
4x1 = 4 u |
|
|
2x2 = 4 u |
5x2 = 10 u |
3 u |
4 u |
10 u |
The amount that Kimberly had is the repeated identity. Make the amount that Kimberly had the same. LCM of 4 and 2 is 4.
|
Gillian |
Kimberly |
Fanny |
Before |
3 u |
4 u |
10 u |
Change |
No change |
+ 57 |
- 57 |
After |
3 u |
4 u + 57 |
10 u - 57 |
The amount that Fanny and Kimberly had in the end is the same.
10 u - 57 = 4 u + 57
10 u - 4 u = 57 + 57
6 u = 114
1 u = 114 ÷ 6 = 19
Amount that Fanny had more than Gillian in the end
= 10 u - 57 - 3 u
= 7 u - 57
= 7 x 19 - 57
= 133 - 57
= $76
Answer(s): $76