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    Question

    ‘A’ can do a piece of work in 10 days. ‘B’ can

    do 70% of the same work in 20 days. If they work together for the entire time and get paid Rs.1080, then find the share of ‘A’.
    A Rs.800 Correct Answer Incorrect Answer
    B Rs.880 Correct Answer Incorrect Answer
    C Rs.900 Correct Answer Incorrect Answer
    D Rs.760 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the total work be 20 units. (LCM of 10 and 20) Efficiency of A = 20/10 = 2 units/day Efficiency of B = (20/20) × (70/100) = 2/3 units/day Ratio of the efficiency of A : B = 2 : 2/3 = 3:1 Share of A = (3/4) × 1080 = Rs.800

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