Blake has entered a mountain bike competition at Starvation Flats Bike Park. Placement in the competition is determined by a person's average speed over four laps around the course. The course itself is of a mile long. If Blake completed the four laps in 12 minutes, then his average speed around the track is

miles per hour.

Question

Kaylen Mcdonald

Mathematics

20 September, 00:09

Blake has entered a mountain bike competition at Starvation Flats Bike Park. Placement in the competition is determined by a person's average speed over four laps around the course. The course itself is of a mile long. If Blake completed the four laps in 12 minutes, then his average speed around the track is

miles per hour.

+4

Answers (1)

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Kelvin Meadows · Answer 1

Distance = rate * time, or rewritten rate = distance / time - - - > r = d/t

4 laps, 1 mile per lap = 4 miles = d

12 minutes = 1/5 of hour (12 min/60 min = 1/5) = t

r = 4 / (1/5) mph