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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 Worker E works alone for 15 days, how many units of

    the project will remain incomplete after this period?
    A 253 units Correct Answer Incorrect Answer
    B 261 units Correct Answer Incorrect Answer
    C 269 units Correct Answer Incorrect Answer
    D 257 units Correct Answer Incorrect Answer
    E 285 units Correct Answer Incorrect Answer

    Solution

    Total work done by E in 15 days = 15 × 9 × 1.8 = 243 units. Remaining work = 500 - 243 = 257 units.

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