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    Question

    Deepali invests Rs. 8,300 at a simple interest rate of 4%

    per annum for 6 years. The total amount she receives is Rs. '2k'. What is the product of the digits in 'k'?
    A 625 Correct Answer Incorrect Answer
    B 750 Correct Answer Incorrect Answer
    C 120 Correct Answer Incorrect Answer
    D 450 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Simple interest = Principal × Rate × Time ÷ 100

    Interest = 8,300 × 4 × 6 ÷ 100 = Rs. 1,992

    2k = 8,300 + 1,992

    2k = 10,292

    k = 5,146

    Product = 5 × 1 × 4 × 6 = 120

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