SOLUTION: In the morning, Maria drove to a business appointment at 30 mph. Her average speed on the return trip in the afternoon was 20 mph. The return trip took 1/2 hour longer because of h
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Question 831862: In the morning, Maria drove to a business appointment at 30 mph. Her average speed on the return trip in the afternoon was 20 mph. The return trip took 1/2 hour longer because of heavy traffic. How far did she travel to the appointment?
Please help me answer this question. Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! ---
s = d/t
d = s*t
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x = outbound time
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outbound:
30x = d
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inbound:
20(x + 0.5) = d
20x + 10 = d
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30x = 20x + 10
10x = 10
x = 1 hour
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d = 30x
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answer:
d = 30 miles
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