Railways R.R.C. (Jabalpur) Solved Paper Held on 1st Shift 30-11-2014

  • question_answer The ratio of A's and B's ages is 5 : 7. If the sum of their present ages is 48 years, what is the difference in their ages?

    A) 6 years             

    B) 7 years

    C) 8 years             

    D) None of these

    Correct Answer: C

    Solution :

    Let the present age of A = 5x years and   the present age of B = 7x years Then,                \[5x+7x=48\] \[12x=48\]                                                 \[x=4\] Hence, the difference in their ages \[=7x-5x\]                              \[=2x=2\times 4\]                              \[=8\,\,years\]         

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