SOLUTION: A trucker is expected to average at least 40 mph on his trip to and from the warehouse. He drives to the warehouse at 20 mph. How fast must he drive back?

Question 630691: A trucker is expected to average at least 40 mph on his trip to and from the warehouse. He drives to the warehouse at 20 mph. How fast must he drive back?

Answer by 55305(86) (Show Source): You can put this solution on YOUR website!
Lets assume that distance to the warehouse is 60 miles. That means that it took 3 hours to drive to the warehouse. If the average speed is 40 mph, then he would take 3 hours for his round trip. But it's impossible to drive back from the warehouse in no time at all. So the answer is mph.
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