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    Question

    'A' and 'B' started a business with initial investments

    in the ratio 4:7. After six months, 'C' joined the business with an investment of Rs. 4,000. At the end of the year, the profit shares of 'A' and 'C' were in the ratio of 2:1, and 'B's profit was Rs. 3,000 more than 'C's profit. What was the total profit earned from the business at the end of the year?
    A Rs. 9,100 Correct Answer Incorrect Answer
    B Rs. 8,400 Correct Answer Incorrect Answer
    C Rs. 7,800 Correct Answer Incorrect Answer
    D Rs. 8,000 Correct Answer Incorrect Answer
    E Rs. 10,000 Correct Answer Incorrect Answer

    Solution

    Let the sum invested by 'A' and 'B' be Rs. '4x' and Rs. '7x', respectively. Ratio of profit shares of 'A', 'B' and 'C' at the end of the year = (4x X 12):(7x X 12):(4000 X 6) = 4x:7x:2000 ATQ: (4x/2000) = (2/1) Or, 4x = 4000 So, x = 1000 So, sum invested by 'B' = 7 X 1000 = Rs. 7,000 Ratio of profit shares of 'A', 'B' and 'C' at the end of the year = (4x X 12):(7x X 12):(4000 X 6) = (4 X 1000):(7 X 1000):2000 = 4:7:2 So, profit earned from the business = 3000 X (13/5) = Rs. 7,800

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