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SSC Quantitative Aptitude Percentage Question Bank Percentage (II)

  • question_answer
    The value on an article depredates every year at the rate of 10% of its value. If the Present value of the article is Rs. 729, then its worth 3 yr ago

    A) 1250

    B) Rs. 1000

    C) 1125    

    D) Rs. 1200

    Correct Answer: B

    Solution :

    [b] Let the value of the article 3yr ago be x. Then, \[729=x{{\left( 1-\frac{10}{100} \right)}^{3}}\]\[\Rightarrow \]\[729=x{{\left( \frac{9}{10} \right)}^{3}}\] \[\Rightarrow \]   \[729=x\times \frac{729}{1000}\] \[\Rightarrow \]   \[x=\text{Rs}.\,\,1000\]


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