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    Question

    ‘A’ can do a piece of work in 20 days. ‘B’ can

    do 80% of the same work in 30 days. If they work together for the entire time and get paid Rs.1610, then find the share of ‘A’.
    A Rs.1120 Correct Answer Incorrect Answer
    B Rs.1100 Correct Answer Incorrect Answer
    C Rs.1000 Correct Answer Incorrect Answer
    D Rs.1050 Correct Answer Incorrect Answer

    Solution

    Let the total work be 60 units. (LCM of 20 and 30) Efficiency of A = 60/20 = 3 units/day Efficiency of B = (60/30) × (80/100) = 8/5 units/day Ratio of the efficiency of A : B = 3 : 8/5 = 15:8 Share of A = (15/23) × 1610 = Rs.1050

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