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Problem:500 minutes = ? hoursConversion(s):1 hour = 60 minutesStart with 500 minutes. Arrange a fraction, so that minutes cancels (this is called dimensional analysis), or basically ( 1 hour / 60 minutes ). That reads for every 1 hour there are 60 minutes.( 500 minutes ) x ( 1 hour / 60 minutes ) = 500/60 hoursThe point here is units can cancel out, just like numbers can, using a fraction.500/60 hours = 50/6 = 25/3 hours ~= 8.333 hours.So 500 minutes is equal to about 8.333 hours.
500 hours.
500 divided by 20 equals 25.
500 hours ÷ 24 hours/day = 20 and 5/6 days
Speed = Distance/Time 3 hours and 27 minutes = 3.45 hours Speed = 500/3.45 = 144.9275362 miles per hour Which when rounded up is 145 mph.