Question 893501: If a person is traveling at 40mph and leaves at 8 am, but on the return he/she travels at a rate of 25mph and returns at 2:30pm, how far has the person travelled?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! If a person is traveling at 40mph and leaves at 8 am, but on the return he/she travels at a rate of 25mph and returns at 2:30pm, how far has the person travelled?
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1430 - 0800 = 6.5 hours
Assuming the person was moving all the time,
for a round-trip, the avg speed is
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2*40*25/(40 + 25) = 2000/65 = 400/13 mi/hr
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d = r*t = (400/13)*6.5
d = 200 miles
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