SOLUTION: 12 years ago, David is 3 times old as John.At that time Sam is half as old as John. How old is Sam now?

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Question 1099914: 12 years ago, David is 3 times old as John.At that time Sam is half as old as John. How old is Sam now?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You have three unknowns but only two equations.
You cannot solve the system independently.
The best you can do is get one variable as a function of the other two.
Please repost your question with additional information if it exists.