SOLUTION: An automobile makes a trip of 270 miles in 2 1/2 hours less than it takes the same auto to make a trip of 420 miles traveling at the same speed. What is the average speed of the au
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Question 448880: An automobile makes a trip of 270 miles in 2 1/2 hours less than it takes the same auto to make a trip of 420 miles traveling at the same speed. What is the average speed of the automobile? Answer by jorel1380(3719) (Show Source):
