The ratio of Luis's to Glen's money is 7 : 10. The ratio of Glen's to Ken's money is 3 : 5. If Luis has $273, how much less does Glen have than Ken?
Luis |
Glen |
Ken |
7x3 |
10x3 |
|
|
3x10 |
5x10 |
21 u |
30 u |
50 u |
The amount that Glen has is the repeated identity.
Use LCM to make it the same.
LCM of 10 and 3 = 30
Amount that Luis has = 21 u
21 u = 273
1 u = 273 ÷ 21 = 13
Amount that Glen has less than Ken
= 50 u - 30 u
= 20 u
= 20 x 13
= $260
Answer(s): $260