SOLUTION: Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their ages.

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their ages.       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 887152: Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their ages.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Peter is twice as old as Mary. Seven years ago the sum of their ages was 31. Find their ages.
----------------
The sum of their ages now is 31 + 7 + 7 = 45
P + M = 45
2M + M = 45
--> 30 and 15