Joelle, Linda and Julie had a sum of money. The amount of money Joelle had was
25 of the amount of money Linda had. The ratio of the amount of money Linda had to the total amount of money Julie and Linda had was 3: 8. After Julie gave $95 to Linda, she had as much money as Linda. How much more money did Julie have than Joelle in the end?
Joelle |
Linda |
Julie |
2x3 = 6 u |
5x3 = 15 u |
|
|
3x5 = 15 u |
5x5 = 25 u |
6 u |
15 u |
25 u |
The amount that Linda had is the repeated identity. Make the amount that Linda had the same. LCM of 5 and 3 is 15.
|
Joelle |
Linda |
Julie |
Before |
6 u |
15 u |
25 u |
Change |
No change |
+ 95 |
- 95 |
After |
6 u |
15 u + 95 |
25 u - 95 |
The amount that Julie and Linda had in the end is the same.
25 u - 95 = 15 u + 95
25 u - 15 u = 95 + 95
10 u = 190
1 u = 190 ÷ 10 = 19
Amount that Julie had more than Joelle in the end
= 25 u - 95 - 6 u
= 19 u - 95
= 19 x 19 - 95
= 361 - 95
= $266
Answer(s): $266