The ratio of Ben's to Ken's money is 8 : 3. The ratio of Ken's to Simon's money is 3 : 5. If Ben has $152, how much more does Simon have than Ken?
| Ben |
Ken |
Simon |
| 8x1 |
3x1 |
|
| |
3x1 |
5x1 |
| 8 u |
3 u |
5 u |
The amount that Ken has is the repeated identity.
Use LCM to make it the same.
LCM of 3 and 3 = 3
Amount that Ben has = 8 u
8 u = 152
1 u = 152 ÷ 8 = 19
Amount that Simon has more than Ken
= 5 u - 3 u
= 2 u
= 2 x 19
= $38
Answer(s): $38
