Gem, Hilda and Xylia had a sum of money. The amount of money Gem had was
23 of the amount of money Hilda had. The ratio of the amount of money Hilda had to the total amount of money Xylia and Hilda had was 4: 9. After Xylia gave $27 to Hilda, she had as much money as Hilda. How much more money did Xylia have than Gem in the end?
Gem |
Hilda |
Xylia |
2x4 = 8 u |
3x4 = 12 u |
|
|
4x3 = 12 u |
5x3 = 15 u |
8 u |
12 u |
15 u |
The amount that Hilda had is the repeated identity. Make the amount that Hilda had the same. LCM of 3 and 4 is 12.
|
Gem |
Hilda |
Xylia |
Before |
8 u |
12 u |
15 u |
Change |
No change |
+ 27 |
- 27 |
After |
8 u |
12 u + 27 |
15 u - 27 |
The amount that Xylia and Hilda had in the end is the same.
15 u - 27 = 12 u + 27
15 u - 12 u = 27 + 27
3 u = 54
1 u = 54 ÷ 3 = 18
Amount that Xylia had more than Gem in the end
= 15 u - 27 - 8 u
= 7 u - 27
= 7 x 18 - 27
= 126 - 27
= $99
Answer(s): $99