Beth got a job painting dorm rooms at her college. At top speed, she could paint 5 identical rooms during one 6-hour shift. How long did she take to paint each room?

A. 50 minutes
B. 1 hour and 10 minutes
C. 1 hour and 12 minutes
D. 1 hour and 15 minutes
E. 1 hour and 20 minutes

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  1. (6 * 60) / 5 = __________ minutes

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    Ms. Sue
  2. 72 minutes

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  3. 1 hour = 60 minutes,
    so 72 minutes is 1 hour and 12 minutes

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  4. >>She could paint 5 identical rooms during one 6-hour shift.<<

    So her painting rate was 5 rooms per 6 hours or (5 rooms)/(6 hours) or (5/6)room/hour

    How long did she take to paint each room?

    Let the length of time in hours be x

    Accomplishment = (Rate)(Time)

    Since it asks for "each" room, that means each accomplishment of 1 room,
    so we substitute 1 for her accomplishment, 5/6 for her rate, and
    x for her time:

    1 = (5/6)x

    Multiply both sides by 6

    6 = 5x

    Divide both sides by 5.

    6/5 = x

    Answer: 6/5 hours or 1 1/5 hours or
    1 hour 12 minutes.


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  5. Thank you very much Edwin

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