Question: The bus driver drives an average of 2 hours each day, 5 days a week. From Monday to Wednesday he drove at an average speed of 12 kilometers per hour, and from Thursday to Friday at an average speed of 9 kilometers per hour. How many kilometers did the driver travel during these 5 days? Think carefully first, then make a decision:
User
From Monday to Wednesday, there are 3 * 2 = 6 hours of work. During this time the driver drove 6 * 12 = 72 kilometers. On Thursday and Friday, there are 2 * 2 = 4 hours of work in total. During this time the driver drove 4 * 9 = 36 kilometers. So in total, the driver traveled 72 + 36 = 108 kilometers during these five days. So the answer is 108.
Assistant