Lizzy: A bathroom has 10 6 inch tiles along its width and 20 6 inch tiles along its length. What is the square footage of the bathroom?.
Me: Hmmm, let me think. I think this is the detailed solution:
There are 10 tiles that are 6 inches long running the width of the bathroom so it is 10 * 6 = 60 inches long. There are 12 inches in a foot and it's 60 inches wide so it is 60 / 12 = 5 feet wide. There are 20 tiles that are 6 inches long running the length of the bathroom so it's 20 * 6 = 120 inches long. There are 12 inches in a foot and it's 120 inches long so it is 120 / 12 = 10 feet wide. The square footage is l x w so the bathroom has 10 * 5 = 50 sq feet. Final answer: 50.