15 minutes.
15 minutes = 1/4 hour so 125 mph for 1/4 hour = 125/4 miles = 31.25 miles.
15 hours 20 minutes at 60 mph
It would take 30 minutes driving at 30 MPH.
15 MPH1 mile / 4 minutes x 15 /15 = 15 miles / 60 minutes ... or ... 15 miles / 1 hour.
50 miles = 60 minutes 5 miles = 6 minutes 15 miles = 18 minutes
8mph
30 mph
9 mph for 1 hour and 40 minutes is 15 miles. 1 hour at 9 mph = 9 miles 40 minutes at 9mph = 6 miles 9 miles + 6 miles = 15 miles
252 miles in 5 hours and 15 minutes = 48 mph
11/2 miles in 15 minutes = 6 mph
About 7 hours 15 minutes at 60 mph