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Railways Sample Paper RRB (Group D) Sample Test Paper-15

  • question_answer
    If the manufacturer gains 10%, the wholesale dealer 15% and the retailer 25%, then find the cost of production of a table, the retail price of which is Rs. 1265?

    A)  Rs. 800

    B)  Rs. 1000

    C)  Rs. 900

    D)         Rs. 600

    Correct Answer: A

    Solution :

    [a] Let the cost of product.ion of the table be Rs. x. Then, 125% of 115% of 110% of x= 1265 \[\Rightarrow \,\,\,\frac{125}{100}\times \frac{115}{100}\times \frac{110}{100}\times x=1265\] \[\Rightarrow \frac{253}{160}x=1265\Rightarrow \,\,x=\left( \frac{1265\times 160}{253} \right)=Rs.\,\,8001\]


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