Jim ran 16 miles in 2 hours while Frank ran 20 miles in 2 hours. How many more miles did Frank run than Jim in an hour?
Jim ran 16 / 2 = <<16/2=8>>8 miles for an hour.
Frank ran 20 / 2 = <<20/2=10>>10 miles for an hour.
Frank ran 10 - 8 = <<10-8=2>>2 more miles than Jim in an hour.
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