SOLUTION: A commuter plane provides transportation from an international airport to the surrounding cities. One commuter plane averaged 280 mph flying to a city and 120 mph returning to the

Question 876731: A commuter plane provides transportation from an international airport to the surrounding cities. One commuter plane averaged 280 mph flying to a city and 120 mph returning to the international airport. The total flying time was 4 h. Find the distance between the two airports.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Time in hrs flying to the city:
(1)
Time in hrs flying back:
(2)
------------------
(3)
-----------------
(1)
(2)
Subtract (2) from (1)

--------------------
By substitution:
(3)
(3)
(3)
(3) hrs
and

and
(1)
(1)
(1)
check:
(2)
(2)
(2)
The distance between the two airports
is 336 mi

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