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    Question

    Direction: Five workers – A, B, C, D, and E – are working on a construction project to complete 500 units of work. Each worker works different numbers of hours per day and has varying work efficiencies, which are calculated as the number of units completed per hour. The following table shows the daily working hours and the efficiency (units per hour) for each worker:

    If Workers A and B work together for 12 days, how much

    of the total 500 units of work will they complete?
    A 408 units Correct Answer Incorrect Answer
    B 416 units Correct Answer Incorrect Answer
    C 424 units Correct Answer Incorrect Answer
    D 432 units Correct Answer Incorrect Answer
    E 440 units Correct Answer Incorrect Answer

    Solution

    Total work done by A in 12 days = 12 × 8 × 2 = 192 units. Total work done by B in 12 days = 12 × 6 × 3 = 216 units. Total work by A and B = 192 + 216 = 408 units.

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