Every ten minutes during sunset, the sky changes to a new color. How many colors did the sky turn over the two hours of a long summer sunset if each hour is sixty minutes long? Give me reasons, before answering the question
At 60 minutes per hour, the sunset was 2 * 60 = 120 minutes long. The sky changes color every 10 minutes, so it turned 120 / 10 = 12 colors over the summer sunset. So the final answer is 12.