Question 1190971
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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.