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    Question

    A certain sum at certain rate % per annum simple

    interest becomes Rs 6300 in 2 years and Rs 6750 in 5 years. The principal and rate of interest are -      
    A Rs 5400 and 1.5% Correct Answer Incorrect Answer
    B Rs 6000 and 2.5% Correct Answer Incorrect Answer
    C Rs 4500 and 3% Correct Answer Incorrect Answer
    D Rs 5400 and 5% Correct Answer Incorrect Answer

    Solution

    According to the given information, interest of 3 years for that the given sum = 6750 – 6300 = 450 Therefore, the interest of 1 year for the same sum = 450/3 = Rs 150 Hence, required sum = 6300 – (150 × 2) = 6000 Whereas, rate of interest = (150 × 100)/(6000 × 1) = 2.5%

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