(2.5) ( pi/sqrt(pi2) ) sin(pi/2) miles per hour
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An hour contains sixty minutes. Therefore, 25 minutes is 25/60 of one hour. At a rate of 25 miles per hour, one can cover a distance of (25/60)/25 = 10.4 (the last digit may not be significant, because the primary data have only two significant digits.)
theres 30 minutes in a half hour.. theres 90 minutes in an hour and a half.
exactly 1 hour and 48 minutes
1.25 hours is 75 minutes @60 minutes per hour.
1 hour and 40 minutes.