SOLUTION: from her house Anna is driving an average speed of 60 miles per hour. She returned over the same route at an average speed of 45 miles per hour. If she spent 7 hours traveling ho

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Question 868656: from her house Anna is driving an average speed of 60 miles per hour. She returned over the same route at an average speed of 45 miles per hour. If she spent 7 hours traveling how many miles is Anna's house from her grandmother's house?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
60*t = 45(7-t)
105t = 315
t = 3hr
60mph%2A3hr+ = 180mi