The ratio of Peter's to Luke's money is 4 : 5. The ratio of Luke's to Oliver's money is 4 : 5. If Peter has $208, how much less does Luke have than Oliver?
| Peter |
Luke |
Oliver |
| 4x4 |
5x4 |
|
| |
4x5 |
5x5 |
| 16 u |
20 u |
25 u |
The amount that Luke has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 4 = 20
Amount that Peter has = 16 u
16 u = 208
1 u = 208 ÷ 16 = 13
Amount that Luke has less than Oliver
= 25 u - 20 u
= 5 u
= 5 x 13
= $65
Answer(s): $65
