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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-9

  • question_answer
    A trader marked a watch 40% above the cost price and then gave a discount of 10%. He made a net profit of? 468 after paying a tax of 10% on the gross profit. What is the cost price of the watch?

    A)  Rs.1200                       

    B)  Rs.1800           

    C)         Rs.2000           

    D)         Rs.2340                       

    Correct Answer: C

    Solution :

    Let the cost price of the watch = Rs. x After 40% marked price and 10% discount \[=x\times \frac{90}{100}\times \frac{140}{100}=\frac{126x}{100}\] profit  \[=\frac{126x}{100}-x=\frac{26x}{100}\] According to question, Pay 10% tax on profit \[=\frac{26x}{100}\times \frac{90}{100}=468\] \[x=\frac{468\times 100\times 100}{26\times 90}=Rs.\,2000\]


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