Fred goes to visit a friend who lives 60 miles away. He drives his car at an avarege speed of 30 miles per hour. At what speed will he need to travel on his way back if he want the averagre speed of his round trip to be 60 miles per hour?

Andy

It's a 120 mile round trip, so that means he would have to complete the trip in two hours to average 60 miles per hour. However, it has already taken Fred two hours simply to get there. Therefore, there is no speed at which Fred could travel to average 60 miles per hour the whole trip. By the way, if anyone says the correct answer is 90 miles an hour, they are WRONG! Oct 29 02, 6:32 PM

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