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    Question

    The interest obtained on Rs. (2p + 600) at 18% p.a. for

    5 years (simple interest) is Rs. (p + 840). Find the ratio (p - 75) :(p + 25)
    A 5:4 Correct Answer Incorrect Answer
    B 2:3 Correct Answer Incorrect Answer
    C 5:7 Correct Answer Incorrect Answer
    D 3:4 Correct Answer Incorrect Answer

    Solution

    ATQ, Simple interest = Principal × Rate × Time ÷ 100 So, p + 840 = (2p + 600) × 18 × 5 ÷ 100 Or, p + 840 = 1.8p + 540 Or, 0.8p = 300 Or, p = 375 Required ratio = (p - 75) :(p + 25) = (375 - 75) :(375 + 25) = 300:400 = 3:4

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