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Railways Sample Paper RRB (Group D) Sample Test Paper-12

  • question_answer
    A merchant allows a discount of 10% on marked price for the cash payment. To make a profit of 17%, he must mark his goods higher than their cost price by

    A)  30%                

    B)  33%

    C)  40%                

    D)  27%

    Correct Answer: A

    Solution :

    [a] Solving this type of question by short cut. Net profit% = \[x+y+\frac{xy}{100}\] \[17%=-\,10+y+\frac{(-\,10)\times y}{100}\] \[[\therefore '-'for\,\,discount]\] \[27=y-\,\frac{y}{10}\Rightarrow 27=\frac{10y-\,y}{10}\] \[27\times 10=9y\] \[x+y=100\] .Hence, He must mark his goods 30% higher than their- cost price.


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