The ratio of Charlie's money to Adam's money is 7 : 2.
The ratio of Adam's money to Bryan's money is 5 : 2.
The total amount that they have is $392.
How much more money does Charlie have than Bryan?
Charlie |
Adam |
Bryan |
7 x 5 |
2 x 5 |
|
|
5 x 2 |
2 x 2 |
35 u |
10 u |
4 u |
Amount that Adam has is the repeated identity.
Make the amount that Adam has the same using the LCM of 2 and 5.
LCM of 2 and 5 = 10
Charlie : Adam : Bryan
35 : 10 : 4
Total amount that Charlie, Adam and Bryan have
= 35 u + 10 u + 4 u
= 49 u
49 u = 392
1 u = 392 ÷ 49 = 8
Amount that Charlie has more than Bryan
= 35 u - 4 u
= 31 u
= 31 x 8
= $248
Answer(s): $248