The ratio of Glen's to Charlie's money is 5 : 9. The ratio of Charlie's to Warren's money is 3 : 4. If Glen has $75, how much more does Warren have than Charlie?
| Glen |
Charlie |
Warren |
| 5x1 |
9x1 |
|
| |
3x3 |
4x3 |
| 5 u |
9 u |
12 u |
The amount that Charlie has is the repeated identity.
Use LCM to make it the same.
LCM of 9 and 3 = 9
Amount that Glen has = 5 u
5 u = 75
1 u = 75 ÷ 5 = 15
Amount that Warren has more than Charlie
= 12 u - 9 u
= 3 u
= 3 x 15
= $45
Answer(s): $45
