Railways Mathematics Ratio Proportion and Partnership Sample Paper Ratio, Proportion & Partnership Sample Test Paper-6

  • question_answer The ages of A and B are in the ratio 3: 1. 15 year hence the ratio will be 2 : 1. Their present ages are

    A)  45 yrs, 15 yrs

    B)  60 yrs, 20 yrs

    C)  30 yrs, 10 yrs

    D)  21 yrs, 7 yrs

    Correct Answer: A

    Solution :

    [a] Let Age of A = 3x Age of B = x \[\therefore \] \[\frac{3x+15}{x+15}=\frac{2}{1}\] \[3x+15=2x+30\] x = 15 \[\therefore \] Present Age of A = 45 years Present Age of B = 15 years

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