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10 April, 23:05

Working together, printer A and printer B would finish the task in 24 minutes. Printer A alone would finish the task in 60 minutes. How many pages does the task contain if printer B prints 5 pages a minute more than printer A?

1: 600

2: 800

3: 1000

4: 1200

5: 1500

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Answers (1)
  1. 11 April, 00:23
    0
    The correct answer to this question is option (1).

    Explanation:

    Let x1 = Is number of pages that printer A can print in page/minute.

    thus x1 + 5 = Is number of page that printer B can print in page/minute.

    As printer A finishes his work in 60 min. So the task has 60x1 pages. As printers A and B both finish that task in 24 minutes. So the equation can be given as:

    60x1 = 24x1 + 24 (x1 + 5)

    60x1 = 24x1 + 24x1 + 120

    60x1=48x1 + 120

    60x1-48x1=120

    12x1=120

    x1=120/12

    x1=10

    put the value of x1 in to (60x1). Therefore, the task has 60 (10) = 600 pages. the task contains 600 pages.

    So the answer to this question is option (1).
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