The ratio of Valen's to Eric's money is 6 : 5. The ratio of Eric's to Pierre's money is 3 : 4. If Valen has $342, how much less does Eric have than Pierre?
| Valen |
Eric |
Pierre |
| 6x3 |
5x3 |
|
| |
3x5 |
4x5 |
| 18 u |
15 u |
20 u |
The amount that Eric has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Valen has = 18 u
18 u = 342
1 u = 342 ÷ 18 = 19
Amount that Eric has less than Pierre
= 20 u - 15 u
= 5 u
= 5 x 19
= $95
Answer(s): $95
