The ratio of Fred's to Fabian's money is 7 : 6. The ratio of Fabian's to Michael's money is 3 : 5. If Fred has $98, how much more does Michael have than Fabian?
Fred |
Fabian |
Michael |
7x1 |
6x1 |
|
|
3x2 |
5x2 |
7 u |
6 u |
10 u |
The amount that Fabian has is the repeated identity.
Use LCM to make it the same.
LCM of 6 and 3 = 6
Amount that Fred has = 7 u
7 u = 98
1 u = 98 ÷ 7 = 14
Amount that Michael has more than Fabian
= 10 u - 6 u
= 4 u
= 4 x 14
= $56
Answer(s): $56