The ratio of Vincent's to Charlie's money is 8 : 5. The ratio of Charlie's to Oscar's money is 3 : 4. If Vincent has $384, how much less does Charlie have than Oscar?
| Vincent |
Charlie |
Oscar |
| 8x3 |
5x3 |
|
| |
3x5 |
4x5 |
| 24 u |
15 u |
20 u |
The amount that Charlie has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Vincent has = 24 u
24 u = 384
1 u = 384 ÷ 24 = 16
Amount that Charlie has less than Oscar
= 20 u - 15 u
= 5 u
= 5 x 16
= $80
Answer(s): $80
