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    Question

    Asmita invested Rs. 3200 for 2 years at an annual simple

    interest rate of r%, while Shreya invested the same sum as Asmita for 2 years at an annual compound interest rate of r%, compounded annually. If the difference between the interest earned by Asmita and Shreya is Rs. 200, calculate the amount received by Asmita.
    A Rs.9800 Correct Answer Incorrect Answer
    B Rs.4500 Correct Answer Incorrect Answer
    C Rs.6800 Correct Answer Incorrect Answer
    D Rs.4800 Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, Difference between the simple interest and compound interest for two years is given by PR2/1002 Where P = sum invested and R = rate of interest ATQ, Pr2/1002 = 200 Or, r2 = (200 ├Ч 100 ├Ч 100)/3200 = 625 Or, r = 25 (Since, rate cannot be negative) Therefore, amount received by тАШAsmitaтАЩ = {(3200 ├Ч 25 ├Ч 2)/100} + 3200 = Rs.4800

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