The ratio of Ken's to Vaidev's money is 5 : 3. The ratio of Vaidev's to Luis's money is 3 : 5. If Ken has $70, how much less does Vaidev have than Luis?
| Ken |
Vaidev |
Luis |
| 5x1 |
3x1 |
|
| |
3x1 |
5x1 |
| 5 u |
3 u |
5 u |
The amount that Vaidev has is the repeated identity.
Use LCM to make it the same.
LCM of 3 and 3 = 3
Amount that Ken has = 5 u
5 u = 70
1 u = 70 ÷ 5 = 14
Amount that Vaidev has less than Luis
= 5 u - 3 u
= 2 u
= 2 x 14
= $28
Answer(s): $28
