Ben can complete 4 math problems in 20 minutes. If he continues working at the same rate, how long will it take Ben to complete 17 math problems?

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  1. 20/4 = 5

    He takes 5 minutes to complete each problem.

    Can you take it from there?

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    Ms. Sue
  2. 20/4=5
    Therefore it will take him 85 min to complete 17 questions.

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