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    Question

    Ravi invested Rs. 2500 at (R + 4)% p.a. simple interest and

    earned an interest of Rs. 1500 at the end of 3 years. Find the interest earned if the same amount is invested at R% p.a. simple interest for 2 years.
    A Rs.800 Correct Answer Incorrect Answer
    B Rs.650 Correct Answer Incorrect Answer
    C Rs.770 Correct Answer Incorrect Answer
    D Rs.450 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    2500 × (R + 4)/100 × 3 = 1500

    Or, 75R + 300 = 1500

    Or, 75R = 1200

    Or, R = 16

    Desired Interest = 2500 × 16/100 × 2 = Rs. 800

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