SOLUTION: in the morning, maria drove to a business appointment at 70 mph. Her average speed on the return trip in the afternoon was 60 mph. The return trip took 1/6 hr longer because of hea

Question 490785: in the morning, maria drove to a business appointment at 70 mph. Her average speed on the return trip in the afternoon was 60 mph. The return trip took 1/6 hr longer because of heavy traffic. How far did she travel to the appointment?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
in the morning, maria drove to a business appointment at 70 mph. Her average speed on the return trip in the afternoon was 60 mph. The return trip took 1/6 hr longer because of heavy traffic. How far did she travel to the appointment?
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d = r*t
d = 70*t = 60*(t + 1/6)
70t = 60t + 10
10t = 10
t = 1 hour
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1 hour @ 70 mi/hr = 70 miles

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