The ratio of Will's to Fabian's money is 7 : 5. The ratio of Fabian's to Tommy's money is 3 : 4. If Will has $294, how much less does Fabian have than Tommy?
| Will |
Fabian |
Tommy |
| 7x3 |
5x3 |
|
| |
3x5 |
4x5 |
| 21 u |
15 u |
20 u |
The amount that Fabian has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Will has = 21 u
21 u = 294
1 u = 294 ÷ 21 = 14
Amount that Fabian has less than Tommy
= 20 u - 15 u
= 5 u
= 5 x 14
= $70
Answer(s): $70
