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27 November, 12:28

A math teacher graded 45 problems in 3/5 of an hour. At that rate, how many problems can she grade in one hour

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Answers (2)
  1. 27 November, 12:46
    0
    75

    Step-by-step explanation:

    45*1/3=15

    15*5=75
  2. 27 November, 14:39
    0
    Answer: 75 problems

    Step-by-step explanation:

    3/5 of an hour is the same as 3/5 x one hour.

    one hour is the same as 60 minutes, this means that 3/5 of an hour is the same as:

    3/5 x 60 = 36 minutes

    This means that, the teacher graded 45 problems in 36 minutes. then in 1 minutes;

    The teacher will grade 45/36 problems

    so in 60 minutes;

    the teacher will grade 45/36 x 60 = 75 problems
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