The ratio of Seth's to Ivan's money is 7 : 8. The ratio of Ivan's to Flynn's money is 3 : 5. If Seth has $357, how much more does Flynn have than Ivan?
Seth |
Ivan |
Flynn |
7x3 |
8x3 |
|
|
3x8 |
5x8 |
21 u |
24 u |
40 u |
The amount that Ivan has is the repeated identity.
Use LCM to make it the same.
LCM of 8 and 3 = 24
Amount that Seth has = 21 u
21 u = 357
1 u = 357 ÷ 21 = 17
Amount that Flynn has more than Ivan
= 40 u - 24 u
= 16 u
= 16 x 17
= $272
Answer(s): $272