The ratio of Ahmad's to Henry's money is 6 : 5. The ratio of Henry's to Zane's money is 3 : 4. If Ahmad has $324, how much less does Henry have than Zane?
| Ahmad |
Henry |
Zane |
| 6x3 |
5x3 |
|
| |
3x5 |
4x5 |
| 18 u |
15 u |
20 u |
The amount that Henry has is the repeated identity.
Use LCM to make it the same.
LCM of 5 and 3 = 15
Amount that Ahmad has = 18 u
18 u = 324
1 u = 324 ÷ 18 = 18
Amount that Henry has less than Zane
= 20 u - 15 u
= 5 u
= 5 x 18
= $90
Answer(s): $90
