The ratio of Asher's to Cole's money is 3 : 7. The ratio of Cole's to Ben's money is 3 : 4. If Asher has $162, how much less does Cole have than Ben?
Asher |
Cole |
Ben |
3x3 |
7x3 |
|
|
3x7 |
4x7 |
9 u |
21 u |
28 u |
The amount that Cole has is the repeated identity.
Use LCM to make it the same.
LCM of 7 and 3 = 21
Amount that Asher has = 9 u
9 u = 162
1 u = 162 ÷ 9 = 18
Amount that Cole has less than Ben
= 28 u - 21 u
= 7 u
= 7 x 18
= $126
Answer(s): $126