The ratio of Vaidev's to Cody's money is 3 : 5. The ratio of Cody's to Michael's money is 3 : 4. If Vaidev has $144, how much more does Michael have than Cody?
| Vaidev |
Cody |
Michael |
| 3x3 |
5x3 |
|
| |
3x5 |
4x5 |
| 9 u |
15 u |
20 u |
The amount that Cody has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Vaidev has = 9 u
9 u = 144
1 u = 144 ÷ 9 = 16
Amount that Michael has more than Cody
= 20 u - 15 u
= 5 u
= 5 x 16
= $80
Answer(s): $80
