The ratio of Zane's to Vincent's money is 7 : 6. The ratio of Vincent's to Jack's money is 3 : 5. If Zane has $112, how much more does Jack have than Vincent?
| Zane |
Vincent |
Jack |
| 7x1 |
6x1 |
|
| |
3x2 |
5x2 |
| 7 u |
6 u |
10 u |
The amount that Vincent has is the repeated identity.
Use LCM to make it the same.
LCM of 6 and 3 = 6
Amount that Zane has = 7 u
7 u = 112
1 u = 112 ÷ 7 = 16
Amount that Jack has more than Vincent
= 10 u - 6 u
= 4 u
= 4 x 16
= $64
Answer(s): $64
