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    Question

    A sum of money grows to Rs. 4,900 in 4 years and Rs.

    5,600 in 6 years under simple interest. What is the original principal amount?
    A 2680 Correct Answer Incorrect Answer
    B 3500 Correct Answer Incorrect Answer
    C 1650 Correct Answer Incorrect Answer
    D 2080 Correct Answer Incorrect Answer

    Solution

    ATQ,
    Difference in interest over 2 years: 5,600 − 4,900 = 700
    Annual interest: 700 / 2 = 350
    Principal = 4,900 − (4 × 350) = 3,500

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