Emily works at a horse camp and makes a scale drawing of the barn. The width of a stable in her drawing is 15 in., and the length is 18 in. The actual width of the
stable is 10 ft. What is the actual length of the stable?

12 feet because you take 10 feet and multiply by 12 to make it inches then divide that by 15 to find the scale factor and it is 8 so you take 18 and multiple that by 8. You get 144. You then divide that by 12 to convert it back to feet and you get 12 feet.