The ratio of Zane's to Sean's money is 5 : 8. The ratio of Sean's to Zeph's money is 3 : 4. If Zane has $225, how much more does Zeph have than Sean?
Zane |
Sean |
Zeph |
5x3 |
8x3 |
|
|
3x8 |
4x8 |
15 u |
24 u |
32 u |
The amount that Sean has is the repeated identity.
Use LCM to make it the same.
LCM of 8 and 3 = 24
Amount that Zane has = 15 u
15 u = 225
1 u = 225 ÷ 15 = 15
Amount that Zeph has more than Sean
= 32 u - 24 u
= 8 u
= 8 x 15
= $120
Answer(s): $120