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10th Class Mathematics Related to Competitive Exam Question Bank Commercial Mathematics

  • question_answer
    Rajan lent Rs. 1200 to Rakesh for 3 years at a certain rate of interest and Rs. 1000 to Mukesh for the same time at the same rate. If he gets Rs. 50 more from Rakesh than from Mukesh, then the rate percent

    A)  \[8\frac{1}{3}%\]               

    B)         \[6\frac{2}{3}%\]

    C)  \[10\frac{1}{3}%\]           

    D)         \[9\frac{2}{3}%\]

    Correct Answer: A

    Solution :

     \[\frac{1200\times R\times 3}{100}-\frac{1000\times R\times 3}{100}=50\] or            \[6R=50\] or            \[R=8\frac{1}{3}%\]


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