SOLUTION: what is.
Dave is 4 years older than Colin. Ruth is three times as old as Dave. The total of their three ages is 56 Work out Ruth's age
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Question 1191475: what is.
Dave is 4 years older than Colin. Ruth is three times as old as Dave. The total of their three ages is 56 Work out Ruth's age
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Dave is 4 years older than Colin. Ruth is three times as old as Dave. The total of their three ages is 56 Work out Ruth's age
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D = C + 4
R = 3D = 3(C+4) = 3C+12
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C + (C+4) + (3C+12) = 56
5C = 40
C = 8
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R = 3C+12 = 36
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