Explanation: We know that are 3 feet in a yard, so let's set up a proportion to solve this
x215 3 feet n -------- = ----------- 1 yard 215 yards x 215
We are solving for n. To get from 1 to 215, we multiply by 215. So to get from 3 to the answer, we must multiply by 215 as well. 3 x 215 = 645, therefore that is the answer.
