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    Question

    A certain sum of money becomes 8000 in 6 years and Rs.

    9240 in 10 years at any certain rate of simple interest. Find the principal amount.
    A Rs. 6140 Correct Answer Incorrect Answer
    B Rs. 5100 Correct Answer Incorrect Answer
    C Rs. 6120 Correct Answer Incorrect Answer
    D Rs. 6130 Correct Answer Incorrect Answer

    Solution

    Simple interest for 4 years = 9240 – 8000 = Rs. 1240 Simple interest for 1 year = 1240/4 = Rs. 310 Simple interest for 6 years = 310 × 6 = Rs. 1860 So, required principal amount = 8000 – 1860 = Rs. 6140

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