If you walk for 1.5 hours at 3 mph, how fast should you run during the next 0.5 hours to have the average speed of 4 mph?
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You want an average rate of 4 mph over 2 hoursd=4*2 (1.5+0.5)d=8 miles8-4.5=3.5 miles to run in 0.5 hours3.5=R*0.5R=3.5/0.5=7 mph
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Answer:
its not the complete . so,question i cant do it
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