Railways Sample Paper RRB (Group D) Sample Test Paper-12

  • question_answer
    The present ages of two persons are 36 and 50 years respectively, if after n years the ratio of their ages will be 3 : 4, then the value of n is

    A)  3        

    B)  4

    C)  7                    

    D)  6

    Correct Answer: D

    Solution :

    [d] According to question \[\frac{36+n}{50+n}=\frac{3}{4}\] \[36\times 4+4n=50\times 3+3n\] \[4n-\,3n=150-\,144\] \[n=6\]

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