A pie shop charges $5 for a slice of pie. They cut each whole pie into 4 slices. How much money will the pie shop make if they sell 9 pies? Give me reasons, before answering the question
A pie contains 4 slices so the pie shop makes 5 * 4 = $20 for a pie. If they sell 9 pies, they make 9 * 20 = $180. So the final answer is 180.