Doug entered a canoe race. He rowed 3 1/2 miles in 1/2 hour. What is his average speed in miles per hour ?
2 answers:
3 1/2 miles = 7/2 miles 1/2 hours= 30 minutes So, In 30 mins, travelled 7/2 miles In 1 min, travelled 7/2 ÷ 30= 7/2× 1/30 = (7×1)/(2×30) = 7/60 miles In 60 mins, travelled (7×60)/60 miles = 420/60 miles = 7 miles. Hence, the speed is 7 miles per hour.
Answer:
Doug's average speed is 7 miles per hour.
Step-by-step explanation:
Average speed is defined as ratio of total distance to the total time taken to cover the total distance.
Distance covered by Doug ,D=
Time taken to cover the distance D = T=
Average speed :
Doug's average speed is 7 miles per hour.
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Step-by-step explanation:
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