SOLUTION: Allen , Lydia , Cindy and Marcus are all friends. Marcus says he’s older than Cindy and he should know because he is her brother. Allen knows he’s older than all of them, Cindy is

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Question 1122454: Allen , Lydia , Cindy and Marcus are all friends. Marcus says he’s older than Cindy and he should know because he is her brother. Allen knows he’s older than all of them, Cindy is pretty sure that Lydia is younger than she. List the friends in order from oldest to youngest
Answer by Alex.33(110) About Me  (Show Source):
You can put this solution on YOUR website!
Use name initials to refer to the ages of the four dudes for convenience.
From the question we get
1.M>C
2.A>rest
3.C>L
Combine 1 and 3: M>C>L
Combine above with 2: A>M>C>L.
And we're done.