The ratio of Charlie's money to Bryan's money is 9 : 7.
The ratio of Bryan's money to Adam's money is 5 : 2.
The total amount that they have is $282.
How much less money does Adam have than Charlie?
Charlie |
Bryan |
Adam |
9 x 5 |
7 x 5 |
|
|
5 x 7 |
2 x 7 |
45 u |
35 u |
14 u |
Amount that Bryan has is the repeated identity.
Make the amount that Bryan has the same using the LCM of 7 and 5.
LCM of 7 and 5 = 35
Charlie : Bryan : Adam
45 : 35 : 14
Total amount that Charlie, Bryan and Adam have
= 45 u + 35 u + 14 u
= 94 u
94 u = 282
1 u = 282 ÷ 94 = 3
Amount that Adam has less than Charlie
= 45 u - 14 u
= 31 u
= 31 x 3
= $93
Answer(s): $93