The ratio of Bobby's to Seth's money is 4 : 9. The ratio of Seth's to Wesley's money is 4 : 5. If Bobby has $288, how much more does Wesley have than Seth?
Bobby |
Seth |
Wesley |
4x4 |
9x4 |
|
|
4x9 |
5x9 |
16 u |
36 u |
45 u |
The amount that Seth has is the repeated identity.
Use LCM to make it the same.
LCM of 9 and 4 = 36
Amount that Bobby has = 16 u
16 u = 288
1 u = 288 ÷ 16 = 18
Amount that Wesley has more than Seth
= 45 u - 36 u
= 9 u
= 9 x 18
= $162
Answer(s): $162