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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-13

  • question_answer
    A man sold his book for Rs 891, thereby gaining \[\frac{1}{10}\] of its cost price. Find his cost price.

    A)  Rs.850 

    B)                     Rs.810             

    C)         Rs.851             

    D)         Rs.840 

    Correct Answer: B

    Solution :

    Let C.P.= Rs. x then profit \[=S.P.-C.\text{ }P.\] \[\Rightarrow \]   \[\frac{1}{10}\times x=891-x\Rightarrow \frac{11x}{10}=891\] \[\Rightarrow \]   \[x=\frac{891\times 10}{11}=Rs.\,810\]


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