The ratio of Luis's to Michael's money is 4 : 5. The ratio of Michael's to Peter's money is 3 : 5. If Luis has $228, how much more does Peter have than Michael?
| Luis |
Michael |
Peter |
| 4x3 |
5x3 |
|
| |
3x5 |
5x5 |
| 12 u |
15 u |
25 u |
The amount that Michael has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Luis has = 12 u
12 u = 228
1 u = 228 ÷ 12 = 19
Amount that Peter has more than Michael
= 25 u - 15 u
= 10 u
= 10 x 19
= $190
Answer(s): $190
