125.58 mph
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15 miles/hour (5280 feet/1 mile)(1 hour/3600 seconds) = 22 feet per second
1.5 miles = 40 seconds multiply both by 6 9 miles = 240 seconds = 4 minutes multiply both by 15 135 miles = 60 minutes = 1 hour
3 minutes 15 seconds.
32 hours, 59 minutes, 15 seconds Call it 33 hours.
11/2 miles in 15 minutes = 6 mph