Starting at home, Ishaan traveled uphill to the gift store for 18 minutes at just 10 mph. He then traveled back home along the s ame path downhill at a speed of 30 mph. What is his average speed for the entire trip from home to the gift store and back?
1 answer:
D=TxR D=18 minutes x 10 miles/hr D= 180 minutes miles / hr 1 hr/60 minutes D= 3 miles T= D/R T= 3 miles/ 30 miles/ hr T= 1/10/hr 6 minutes It took Ishaan 24 minutes to go 6 miles so his average speed is D/T=R 6miles/24minutes=miles/hr 1 miles/4 minutes x 60 minutes/hr = 15 miles/hr Ishaan's average speed was 15 mph.
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