The ratio of Fred's to Caden's money is 6 : 5. The ratio of Caden's to Will's money is 3 : 5. If Fred has $216, how much more does Will have than Caden?
| Fred |
Caden |
Will |
| 6x3 |
5x3 |
|
| |
3x5 |
5x5 |
| 18 u |
15 u |
25 u |
The amount that Caden has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Fred has = 18 u
18 u = 216
1 u = 216 ÷ 18 = 12
Amount that Will has more than Caden
= 25 u - 15 u
= 10 u
= 10 x 12
= $120
Answer(s): $120
