The ratio of Bryan's money to Adam's money is 5 : 4.
The ratio of Adam's money to Charlie's money is 6 : 4.
The total amount that they have is $140.
How much less money does Charlie have than Bryan?
Bryan |
Adam |
Charlie |
5 x 3 |
4 x 3 |
|
|
6 x 2 |
4 x 2 |
15 u |
12 u |
8 u |
Amount that Adam has is the repeated identity.
Make the amount that Adam has the same using the LCM of 4 and 6.
LCM of 4 and 6 = 12
Bryan : Adam : Charlie
15 : 12 : 8
Total amount that Bryan, Adam and Charlie have
= 15 u + 12 u + 8 u
= 35 u
35 u = 140
1 u = 140 ÷ 35 = 4
Amount that Charlie has less than Bryan
= 15 u - 8 u
= 7 u
= 7 x 4
= $28
Answer(s): $28