The ratio of Adam's money to Bryan's money is 8 : 1.
The ratio of Bryan's money to Charlie's money is 8 : 7.
The total amount that they have is $316.
How much more money does Adam have than Charlie?
Adam |
Bryan |
Charlie |
8 x 8 |
1 x 8 |
|
|
8 x 1 |
7 x 1 |
64 u |
8 u |
7 u |
Amount that Bryan has is the repeated identity.
Make the amount that Bryan has the same using the LCM of 1 and 8.
LCM of 1 and 8 = 8
Adam : Bryan : Charlie
64 : 8 : 7
Total amount that Adam, Bryan and Charlie have
= 64 u + 8 u + 7 u
= 79 u
79 u = 316
1 u = 316 ÷ 79 = 4
Amount that Adam has more than Charlie
= 64 u - 7 u
= 57 u
= 57 x 4
= $228
Answer(s): $228