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Railways Sample Paper RRB (Group D) Sample Test Paper-2

  • question_answer
    The current ages of Sonali and Monali are in the ratio 5 :3.Five years from now, their ages will be in the ratio 10:7.Then, Monali's current age is:

    A)  9 years            

    B)  15 years

    C)  3 years            

    D)  5 years

    Correct Answer: A

    Solution :

    [a] Ratio of present ages of Sonali and Monali =5:3 after 5 years ratio of ages of both girls =10:7 Let actual present ages are 5x and 3x years. \[=\frac{5x+5}{3x+5}=\frac{10}{7}\] \[=35x+35=30x+50\] \[5x=15\] \[x=3\] .So, Monali age \[=3\times 3=9\,\,years.\]


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