The sum of the ages of father and son is 45 years. Five years ago the product of their ages was 4 times…
The correct choice is: 36 yrs, 9 yrs Five years ago: \((F-5)(S-5)=4(F-5)\), so \(S-5=4\), i.e. \(S=9\). Then \(F=45-9=36\). Hence the ages are 36 yrs, 9 yrs.
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The sum of the ages of father and son is 45 years. Five years ago the product of their ages was 4 times the father's age at that time. The present ages of the father and son, respectively are:
Answer and explanation
Correct answer B
The correct choice is: 36 yrs, 9 yrs
Five years ago: , so , i.e. .
Then .
Hence the ages are 36 yrs, 9 yrs.
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NCHM Joint Entrance Examination (NCHM JEE)