If they started with 100 and 27 remained, then (100 - 27) = 73 were taken.
ratio of milk cartons taken to total milk cartons = 73/100 or 73:100 or 73 to 100
53-49=4
4 times 12=48. the unknown number is 48
Speed = distance / time
Speed = 182.4 / 3
Speed = 60.8 miles per hour.