This is somehow a strange question, but I'll try to answer it. You walked 12 miles, vice versa, it's 12miles per hour.
18.7 miles in 100 seconds = 673.2 miles per hour.
18/45 = 0.4 hour = 1,440 seconds
100 yards in 10 seconds 20.45 miles per hour.
About 70 miles per hour.
36.466 miles per hour
8.726 miles per hour.
100 yards/6.7 seconds = 30.5292 miles per hour (rounded)
(1 mile / 75 seconds) x (3,600 seconds / hour) = 48 miles per hour
200 meters in 36 seconds is equivalent to a speed of approximately 18.18 miles per hour.
He walked for 12,600 seconds @3,600 seconds per hour.
22.62 miles per hour
About 1.6 miles per hour.