SOLUTION: peter is twice as old as Paul who in turn is 5 years older than Grace. if their total age is 47 years. How old are they?

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Question 1123164: peter is twice as old as Paul who in turn is 5 years older than Grace. if their total age is 47 years. How old are they?
Answer by Alan3354(69443) About Me  (Show Source):
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peter is twice as old as Paul who in turn is 5 years older than Grace. if their total age is 47 years. How old are they?
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Peter = 2*Paul
Paul = G + 5
--> Peter = 2*(G+5)
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2*(G+5) + G+5 + G = 47