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leanngomel

2 inches in half an hour 

texaschic101
  1. 6 / 30 = x / 60....6 in to 30 min = x in to 60 min
       cross multiply
       (30)(x) = (6)(60)
        30x = 360
           x = 360/30
          x = 12 inches in 60 minutes (or 1 hr)

    2. 1/15 = x / 30.....1 in to 15 min = x in to 30 min
        cross multiply
         (15)(x) = (30)(1)
          15x = 30
             x = 30/15
             x = 2 inches in 30 min (or 1/2 hr)

    3. 3/20 = x/120....3 in. to 20 min = x in. to 120 min (2 hrs = 120 min.)
         cross multiply
         (20)(x) = (3)(120)
          20x = 360
             x = 360/20
             x = 18 inches in 120 minutes (or 2 hrs)

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