Question 1195942
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Darren drives to school in rush hour traffic and averages 22mph. 
He returns home in mid-afternoon when there is less traffic and averages 44mph. 
What is the distance between his home and school if the total traveling time is 1hr 30min?
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Notice that 44 mph is twice as fast as 22 mph.


It means, and you can get it intuitively, that one third of the total travel time,
which is 1 hour and 30 minutes, is spend with the rate of 44 mph.


Again, the travel time with the rate of 44 mph was 30 minutes, or half an hour.


It implies that one way distance to the school is 22 miles.    <U>ANSWER</U>
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Solved (mentally).