The ratio of Jeremy's to Michael's money is 7 : 10. The ratio of Michael's to Sean's money is 3 : 4. If Jeremy has $231, how much less does Michael have than Sean?
| Jeremy |
Michael |
Sean |
| 7x3 |
10x3 |
|
| |
3x10 |
4x10 |
| 21 u |
30 u |
40 u |
The amount that Michael has is the repeated identity.
Use LCM to make it the same.
LCM of 10 and 3 = 30
Amount that Jeremy has = 21 u
21 u = 231
1 u = 231 ÷ 21 = 11
Amount that Michael has less than Sean
= 40 u - 30 u
= 10 u
= 10 x 11
= $110
Answer(s): $110
