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    Question

    β€˜X’ and β€˜Y’ started a business by investing Rs.

    7,500 and Rs. 5,000 respectively. β€˜x’ months later, they admitted β€˜Z’ as a partner who invested Rs. 10,000. If at the end of the year, the profit share of β€˜X’ was Rs. 9,000 out of the total profit of Rs. 18,000, then find the value of β€˜x’.
    A 6 Correct Answer Incorrect Answer
    B 8 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 5 Correct Answer Incorrect Answer
    E 9 Correct Answer Incorrect Answer

    Solution

    Let β€˜Z’ invested for β€˜m’ months. So,
    x = 12 βˆ’ m Ratio of profit shares of β€˜X’, β€˜Y’ and β€˜Z’
    = (7500 Γ— 12) : (5000 Γ— 12) : (10000 Γ— m) = 90 : 60 : 10m ATQ, 9000 / 18000 = 90 / (90 + 60 + 10m) 1 / 2 = 90 / (150 + 10m) 150 + 10m = 180 10m = 30 m = 3 So, x = 12 βˆ’ 3 = 9

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