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Railways Sample Paper RRB (Group D) Sample Test Paper-10

  • question_answer
    The population of a town increases by 5% every year. If the present population is 9261, the population 3 years ago was

    A)  5700   

    B)  6000

    C)  7500               

    D)  8000

    Correct Answer: D

    Solution :

    [d] Population 3 yrs. ago\[=\frac{9261}{{{\left( 1+\frac{5}{100} \right)}^{3}}}\] \[=\frac{9261\times 20\times 20\times 20}{21\times 21\times 21}=8000\]


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