The ratio of Adam's money to Bryan's money is 9 : 2.
The ratio of Bryan's money to Charlie's money is 6 : 2.
The total amount that they have is $105.
How much less money does Charlie have than Adam?
Adam |
Bryan |
Charlie |
9 x 3 |
2 x 3 |
|
|
6 x 1 |
2 x 1 |
27 u |
6 u |
2 u |
Amount that Bryan has is the repeated identity.
Make the amount that Bryan has the same using the LCM of 2 and 6.
LCM of 2 and 6 = 6
Adam : Bryan : Charlie
27 : 6 : 2
Total amount that Adam, Bryan and Charlie have
= 27 u + 6 u + 2 u
= 35 u
35 u = 105
1 u = 105 ÷ 35 = 3
Amount that Charlie has less than Adam
= 27 u - 2 u
= 25 u
= 25 x 3
= $75
Answer(s): $75