Question

Your model locomotive is 18 inches long. It is an exact model of a locomotive that is 72 feet long. A window on the locomotive is how many times wider than a window on the model?

Answer 1

Your model locomotive (x) = 18 inches
72 feet (y)= 72*12 inches 
            = 864 inches

Ratio = x:y
          = 18:864
          = 18/864
          = 1/48
          = 1:48