SOLUTION: A man is 4times older than his son. 5years ago the product of their age is 175.find their present age.

Question 1190971: A man is 4times older than his son. 5years ago the product of their age is 175.find their present age.

Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52793)   (Show Source): You can put this solution on YOUR website!
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A man is 4times older than his son. 5 years ago the product of their age is 175. find their present age.
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(1)   When you use this form " A man is 4 times older than his son ", it shows that you (or the person who composed this problem)

      are unfamiliar with the rules of English on how to use this form in Math problems.

      The correct form is " A man is 4 times as old as his son ".

(2)   Their current age is 10 years (the son) and 40 years (the father).

(3)   5 years ago they were 5 and 35 years old, respectively.

This problem (when presented correctly) is for mental solution in 5 seconds.

Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
The son's age, b
The man's age, b+4b=5b

The description, .
You can solve this and decide if it gives a meaningful result.

Factor of 5 is on both sides, so

and these factors will not give the whole numbers in case you were expecting some.
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