SOLUTION: Fred left the city for vacation. Dan left four hours later going forty mph faster to catch up. After three hours Dan caught up. What was Fred's average speed?
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Question 1042096: Fred left the city for vacation. Dan left four hours later going forty mph faster to catch up. After three hours Dan caught up. What was Fred's average speed? Answer by solver91311(24713) (Show Source):
Let represent Fred's speed. For 4 hours plus the 3 hours Dan took to catch up, Fred travelled at miles per hour, so he travelled a total of miles. Dan travelled that same distance in 3 hours at miles per hour. So,
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John
My calculator said it, I believe it, that settles it
