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    Question

    Someone puts Rs. 18,000 in a scheme offering simple

    interest at ‘x%’ annually and receives Rs. 22,500 after 2.5 years. If he had instead invested Rs. 15,000 at the same rate for 3 years, what interest would he have earned?
    A Rs.5000 Correct Answer Incorrect Answer
    B Rs.2000 Correct Answer Incorrect Answer
    C Rs.4500 Correct Answer Incorrect Answer
    D Rs.2000 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Total interest for 2.5 years = 22500 - 18000 = Rs. 4,500 ATQ; 4500 = (18000 × x × 2.5) ÷ 100 ⇒ x = 10 So, required interest = (15000 × 10 × 3) ÷ 100 = Rs. 4,500

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