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Railways R.R.C. (Patna) Solved Paper Held on 1st Shift 16-11-2014

  • question_answer
    A total of 324 coins of 20 paise and 25 paise make a sum of Rs. 71. The number of 25 paise coins is?

    A) 120                              

    B) 144

    C) 124                              

    D) 200

    Correct Answer: C

    Solution :

    Let the numbers of 25 paise coins is x and the number of 20 paise coins is (324 - x).       Then,                \[\frac{x}{4}+\frac{324-x}{5}=71\] \[5x+1296-4x=71\times 20\] \[x+1296=1420\] \[x=124\]   


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