A man build a model plane that is a scale model of an original. The original plane is 150 feet in length. If the scale model uses 4 inches for every 50 feet, the model is _____ inches in length.
12 inches in length, since 4 inches is used for every 50 you divide 150 feet by 50. The answer is 3 which is the factor being used to make the scale. 4 times 3 is 12
