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    Question

    Amit invested Rs. ‘10x’ in scheme ‘A’ offering

    simple interest of 25% p.a. and reinvested the interest earned from scheme ‘A’ at the end of 4 years in scheme ‘B’ offering compound interest of 20% p.a. compounded annually. If total amount received from scheme ‘B’ after 2 years is Rs. 8640, then find the value of ‘90x’.
    A 54500 Correct Answer Incorrect Answer
    B 54600 Correct Answer Incorrect Answer
    C 54900 Correct Answer Incorrect Answer
    D 54700 Correct Answer Incorrect Answer
    E 54000 Correct Answer Incorrect Answer

    Solution

    According to question; 1.44 × {0.25 × 4 × 10x} = 8640 => {0.25 × 4 × 5x} = 6000 => x = 600 So, 90x = 90 × 600 = 54000

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