If Angela is twice as old as the combined ages of Bill and Charlie, then how old is Charlie?

If Angela is twice as old as the combined ages of Bill and Charlie, then how old is Charlie?

(1) Four years from now, the sum of all three people’s ages will be 108.

(2) Five years ago, the average (arithmetic mean) of all three people’s ages was 27.

Answer: E

Source: Princeton Review

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