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    Question

    A certain amount becomes three times itself in 20 years

    at simple interest. What is the value of (6R - 8)?
    A 12 Correct Answer Incorrect Answer
    B 52 Correct Answer Incorrect Answer
    C 18 Correct Answer Incorrect Answer
    D 32 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the principal be Rs. P.

    Interest = 3P - P = 2P

    Using SI formula:

    2P = P × R × 20 ÷ 100

    ⟹ R = 10

    Required value = 6 × 10 - 8 = 52

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