<PRE><B>Question 277004</B>
it takes a plane 40 min longer to fly from Boston to LA at 525 mi/h than it does to return at 600 mi/h. how far apart are the cities?

Let the time taken to return be x hours  (LA to Boston)

The time to go will be x+2/3 hours

600x= 525(x+2/5)

600x=525x +210

75x = 210
x=2.8 hours


The distance will be 2.8 *600=1680 miles


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