Multiple Choice Questions on The sum of the ages of a father and son is 45 years Five years ago the product of their ages was fou........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The sum of the ages of a father and son is 45 years Five years ago the product of their ages was fou...........

Quantitative Aptitude ( CCS) Problems based on Ages
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    The sum of the ages of a father and son is 45 years. Five years ago, the product of their ages was four times the father’s age at that time. The present age of father and son respectively are

    25 years, 10 years

    Incorrect Answer

    36 years, 9 years

    Correct Answer

    39 years, 6 years

    Incorrect Answer

    none of these

    Incorrect Answer
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    Explanation:

    Let sons age = x years. Then fathers age = (45 - x)years. 
    (x—5)(45—x—5) = 4(45- x - 5) hence (x—5) = 4 so x = 9 
    Their ages are 36 years and 9 years.

    Hence, option 2 is the correct answer.

    By: Amit Kumar
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