The ratio of Japheth's to Carl's money is 5 : 9. The ratio of Carl's to Ryan's money is 3 : 4. If Japheth has $95, how much less does Carl have than Ryan?
| Japheth |
Carl |
Ryan |
| 5x1 |
9x1 |
|
| |
3x3 |
4x3 |
| 5 u |
9 u |
12 u |
The amount that Carl has is the repeated identity.
Use LCM to make it the same.
LCM of 9 and 3 = 9
Amount that Japheth has = 5 u
5 u = 95
1 u = 95 ÷ 5 = 19
Amount that Carl has less than Ryan
= 12 u - 9 u
= 3 u
= 3 x 19
= $57
Answer(s): $57
