Multiple Choice Questions on The rate at which a sum becomes four times of itself in 15 years at S I will be ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

The rate at which a sum becomes four times of itself in 15 years at S I will be ........

Quant (SSC) Simple Interest
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    The rate at which a sum becomes four times of itself in 15 years at S.I, will be:

    12%

    Incorrect Answer

    15%

    Incorrect Answer

    20%

    Correct Answer

    25%

    Incorrect Answer
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    Explanation:

    Let principal be x, Amount = 4x then, S.I = 4x  – x = 3x
    ∴ Rate  = (100 × S.I /x × 6)
    = (100 × 3x /x × 15)% = 20%

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