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    Question

    The simple interest received after 7 years on Rs (x +

    650) at the rate of 25% p.a is Rs (4x – 1000). The amount received on Rs 6.4x when invested at 50% p.a compound interest, compounded annually for 2 years can be:
    A Rs. 13937.50 Correct Answer Incorrect Answer
    B Rs. 13150 Correct Answer Incorrect Answer
    C Rs. 16075 Correct Answer Incorrect Answer
    D Rs. 13537.50 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    According to the question, {(x + 650) × 7 × 25}/100 = (4x – 1000) => 7x + 4450 = 16x – 4000 => 9x = 8550 => x = 950 Therefore, required amount received = 6.4× (1 + 50/100)2 = Rs. 13680

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