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    Question

    In a partnership, the amount invested by β€˜P’ and

    β€˜Q’ is in the ratio 7:4. The amount invested by β€˜R’ is Rs. 600 less than the amount invested by β€˜P’. If all three invested for the same duration, and the ratio of profit earned by β€˜P’ and β€˜R’ is 7:5, then what is the ratio of profit earned by β€˜Q’ and β€˜R’?
    A 4:3 Correct Answer Incorrect Answer
    B 4:5 Correct Answer Incorrect Answer
    C 6:5 Correct Answer Incorrect Answer
    D 3:5 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the amount invested by β€˜P’ and β€˜Q’ be Rs. 7x and Rs. 4x, respectively.
    Therefore, amount invested by β€˜R’ = Rs. (7x – 600) According to the question,
    7x / (7x – 600) = 7 / 5
    β‡’ 35x = 49x – 4200
    β‡’ 14x = 4200
    β‡’ x = 4200 / 14 = 300 Therefore, ratio of the profits received by β€˜Q’ and β€˜R’ = 4x / (7x – 600) = 1200 : 1500 =Β 4:5

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