The ratio of Adam's money to Charlie's money is 5 : 1.
The ratio of Charlie's money to Bryan's money is 8 : 7.
The total amount that they have is $550.
How much more money does Adam have than Bryan?
Adam |
Charlie |
Bryan |
5 x 8 |
1 x 8 |
|
|
8 x 1 |
7 x 1 |
40 u |
8 u |
7 u |
Amount that Charlie has is the repeated identity.
Make the amount that Charlie has the same using the LCM of 1 and 8.
LCM of 1 and 8 = 8
Adam : Charlie : Bryan
40 : 8 : 7
Total amount that Adam, Charlie and Bryan have
= 40 u + 8 u + 7 u
= 55 u
55 u = 550
1 u = 550 ÷ 55 = 10
Amount that Adam has more than Bryan
= 40 u - 7 u
= 33 u
= 33 x 10
= $330
Answer(s): $330