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This question cannot be answered sensibly. A mile per hour is a measure of speed, with dimensions [LT-1]. An hour is a measure of time, with dimensions [T]. The two measure different things and basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
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How far is3 hours at 15 miles per hour?
45 miles in three hours at 15 miles per hour.
How many miles do you cover in 4 hours going 65 miles per hour?
65 miles per hour x 4 hours = 260 miles
A duck flew at 18 miles per hour for 3 hours. then at 15 per hour for 2 hours how far did the duck fly?
84 miles18 miles/hour * 3 hours = 54 miles15 miles/hour * 2 hours = 30 miles54 miles + 30 miles = 84 miles
How many hours is 1275.0 miles?
at 60 miles per hour it is 21.25 hours
What is the unit rate for 250 miles in 5 hours?
To get the rate for 250 miles in 5 hours, divide the miles by the hours to get miles per hour, 250 miles/5 hours=50 miles per hour. If you divide 5 hours by 250 miles, you get 0.02 hours per mile, the other unit rate for this set of numbers.
