The ratio of Vincent's to Brandon's money is 7 : 3. The ratio of Brandon's to John's money is 3 : 5. If Vincent has $119, how much less does Brandon have than John?
| Vincent |
Brandon |
John |
| 7x1 |
3x1 |
|
| |
3x1 |
5x1 |
| 7 u |
3 u |
5 u |
The amount that Brandon has is the repeated identity.
Use LCM to make it the same.
LCM of 3 and 3 = 3
Amount that Vincent has = 7 u
7 u = 119
1 u = 119 ÷ 7 = 17
Amount that Brandon has less than John
= 5 u - 3 u
= 2 u
= 2 x 17
= $34
Answer(s): $34
