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Railways Quantitative Aptitude Average Sample Paper Average & Problems on Ages Sample Test Paper-7

  • question_answer
    The ratio of the father's age to the son's age is 4 : 1. The product of their ages is 196. What will be the ratio of their ages after 5 years?

    A)  7 : 3                

    B)  14 : 9

    C)  11 : 4  

    D)  17 : 3

    Correct Answer: C

    Solution :

    [c] Let the ratio of proportionality be x, then \[4x\times x=196\]          or, \[4{{x}^{2}}=196\] or, x = 7 Thus, Father?s age = 28 yrs., son?s age = 7 yrs. After 5 yrs., Father?s age = 33 yrs. Son?s age = 12 yrs. \[\therefore \] Ratio \[=33:12=11:4\]


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