Question 1060659
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a commuter has a 20 mile trip each way from home to work. It takes her 30 minutes to get to work and 60 minutes to get home. 
What is her average speed for a typical work day?
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<pre>
Total distance = 20 + 20 miles = 40 miles.

Total time = 30 minutes + 60 minutes = 1.5 hour.

The average speed = {{{Total_distance/Total_time}}} = {{{40/1.5}}} = {{{26}}} {{{2/3}}} miles per hour.
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