The ratio of Owen's to Elijah's money is 8 : 7. The ratio of Elijah's to Jack's money is 4 : 5. If Owen has $608, how much less does Elijah have than Jack?
| Owen |
Elijah |
Jack |
| 8x4 |
7x4 |
|
| |
4x7 |
5x7 |
| 32 u |
28 u |
35 u |
The amount that Elijah has is the repeated identity.
Use LCM to make it the same.
LCM of 7 and 4 = 28
Amount that Owen has = 32 u
32 u = 608
1 u = 608 ÷ 32 = 19
Amount that Elijah has less than Jack
= 35 u - 28 u
= 7 u
= 7 x 19
= $133
Answer(s): $133
