The ratio of Ken's to Vaidev's money is 5 : 9. The ratio of Vaidev's to Lee's money is 3 : 5. If Ken has $85, how much more does Lee have than Vaidev?
Ken |
Vaidev |
Lee |
5x1 |
9x1 |
|
|
3x3 |
5x3 |
5 u |
9 u |
15 u |
The amount that Vaidev has is the repeated identity.
Use LCM to make it the same.
LCM of 9 and 3 = 9
Amount that Ken has = 5 u
5 u = 85
1 u = 85 ÷ 5 = 17
Amount that Lee has more than Vaidev
= 15 u - 9 u
= 6 u
= 6 x 17
= $102
Answer(s): $102