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Railways Sample Paper RRB (Assistant Loco Pilot & Technician) Sample Test Paper-11

  • question_answer
    In a group of cows and hens, the number of legs are 16 more than twice the number of heads. The number of cows is

    A)  5                                

    B)  8

    C)  10                   

    D)       12

    Correct Answer: B

    Solution :

     Let the number of cows be \[x\] and the number of hens by \[y\]. Then. \[4x+2y=3(x+y)+16\] or \[2x+(2x+2y)=(2x+2y)+16\] or \[2x=16\] or \[x=8\]


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