SOLUTION: Jones is four times as old as mary, in ten years time Jones will be twice as old as mary find their age

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Question 1107472: Jones is four times as old as mary, in ten years time Jones will be twice as old as mary find their age
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
J=4M
In ten years,
J%2B10=2%28M%2B10%29
J%2B10=2M%2B20
J=2M%2B10
Substituting from above,
4M=2M%2B10
2M=10
Solve for M then use either equation to solve for J.