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Railways Sample Paper RRB (Group D) Sample Test Paper-5

  • question_answer
    The price of rice has increased by 60%. In order to restore the original price, the new price must be reduced by

    A)  \[33\frac{1}{3}%\]

    B)         \[37\frac{1}{2}%\]

    C)  40 %   

    D)  45%

    Correct Answer: B

    Solution :

    [b] By using \[x+y+\frac{xy}{100}=0\] Let Price be reduced by \[=x%\] \[60+x+\frac{60x}{100}=0\] \[\frac{160x}{100}=-\,60\] \[x=\frac{6000}{160}=-\,37\frac{1}{2}\] (\[-\]Shows reduction)


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