The ratio of Warren's to Fabian's money is 8 : 9. The ratio of Fabian's to Andy's money is 3 : 5. If Warren has $144, how much less does Fabian have than Andy?
Warren |
Fabian |
Andy |
8x1 |
9x1 |
|
|
3x3 |
5x3 |
8 u |
9 u |
15 u |
The amount that Fabian has is the repeated identity.
Use LCM to make it the same.
LCM of 9 and 3 = 9
Amount that Warren has = 8 u
8 u = 144
1 u = 144 ÷ 8 = 18
Amount that Fabian has less than Andy
= 15 u - 9 u
= 6 u
= 6 x 18
= $108
Answer(s): $108