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

  • question_answer 41) The age of Shakti and Kanti are in the ratio of 8 respectively. After 10 years the ratio of their ages will be 13:12. What is the difference in years between their ages?

    A) 6 years

    B)               8 years

    C) 4 years             

    D) 2 years

    Correct Answer: D

    Solution :

    Let the age of Shakti and Kanti is 8x and 7x respectively. Then, after 10 years, \[\frac{8x+10}{7x+10}=\frac{13}{12}\] \[96x+120=91x+130\]             \[5x=10\]               \[x=2\] Hence, the difference in years between their ages \[=8x-7x=x=2\]years

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