The ratio of Elijah's to Ben's money is 5 : 8. The ratio of Ben's to Zeph's money is 3 : 4. If Elijah has $165, how much less does Ben have than Zeph?
Elijah |
Ben |
Zeph |
5x3 |
8x3 |
|
|
3x8 |
4x8 |
15 u |
24 u |
32 u |
The amount that Ben has is the repeated identity.
Use LCM to make it the same.
LCM of 8 and 3 = 24
Amount that Elijah has = 15 u
15 u = 165
1 u = 165 ÷ 15 = 11
Amount that Ben has less than Zeph
= 32 u - 24 u
= 8 u
= 8 x 11
= $88
Answer(s): $88