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7.5 mph

Q: Shayla was late for school. She ran the last half mile in 4 minutes. What was her average speed in miles per hour?

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Shayla's speed for the last half-mile was approximately 0.002 miles per second.

1/2 mile in 4 minutes is equivalent to 1 mile in 8 minutes = 60/8 miles per hour = 7.5 mph.

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Three miles in 45 minutes is an average speed of 4 miles per hour or 5.87 feet per second.

1.5 miles/12 minutes = 7.5 miles/hour

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Shayla's speed for the last half-mile was approximately 0.002 miles per second.

7.5 mph

1/2 mile in 4 minutes is equivalent to 1 mile in 8 minutes = 60/8 miles per hour = 7.5 mph.

If you run 2.5 miles in 20 minutes your average speed is 7.5 miles per hour.

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Average speed = Distance/Time = 2.5 miles/15 minutes = 10 miles per hour

The driving distance from Carlsbad, CA to Torrey Pines High School, San Diego, CA is 17.9 miles. The average driving time is 25 minutes.

Three miles in 45 minutes is an average speed of 4 miles per hour or 5.87 feet per second.

1.5 miles/12 minutes = 7.5 miles/hour

If someone runs 10 miles in 90 minutes their average speed is 6.67 mph

At an average 60 mph: 108 minutes

He drove 20 miles in 50 min. so average was 20 x 60/50 = 24 mph