The ratio of Ethan's to Simon's money is 5 : 4. The ratio of Simon's to Ian's money is 3 : 4. If Ethan has $195, how much more does Ian have than Simon?
| Ethan |
Simon |
Ian |
| 5x3 |
4x3 |
|
| |
3x4 |
4x4 |
| 15 u |
12 u |
16 u |
The amount that Simon has is the repeated identity.
Use LCM to make it the same.
LCM of 4 and 3 = 12
Amount that Ethan has = 15 u
15 u = 195
1 u = 195 ÷ 15 = 13
Amount that Ian has more than Simon
= 16 u - 12 u
= 4 u
= 4 x 13
= $52
Answer(s): $52
