Question 1062857
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sam is driving a distance of 140 miles from his house to visit Melissa. Sam takes city roads , on which can he travel an average 
of 35 mph for a total of 1.5 hours . Sam also takes the highway , on which he travels an average of 65 mph for a total 
of x hours . 
approximately how long does Sam travels on the highway , to the nearest tenth of an hour ?
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Such a problem you can solve in ONE line:


How long does Sam travels on the highway = {{{(140-1.5*35)/65}}} hours.


Use your calculator.