SOLUTION: Mr. Jacobs is four times as old as his son. Five years ago, he was nine times as old as his son. What is Mr. Jacob's age?

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Question 238204: Mr. Jacobs is four times as old as his son. Five years ago, he was nine times as old as his son. What is Mr. Jacob's age?
Found 2 solutions by nyc_function, solver91311:
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
Son's age = x
Jacob's age = 4x
4x - 5 = 9(x - 5)
Can you take it from here?
I gave you the equation that you need to find Mr. Jacob's age.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the son's age. Then the father's age is

Five years ago the son was and the father was

And we know that



Solve for to get the son's age and then multiply by 4.

The reason that I didn't set it up so that represented the father's age is that the son's age would have to be a fraction, -- messy.

John