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

Algebra ->  Customizable Word Problem Solvers  -> Age -> 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      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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) About Me  (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
-----------
D = C + 4
R = 3D = 3(C+4) = 3C+12
----
C + (C+4) + (3C+12) = 56
5C = 40
C = 8
---
R = 3C+12 = 36