SOLUTION: A pilot flew a jet from city A to city B, a distance of 2200 mi. On the return trip, the average speed was 20% faster than the outbound speed. The round-trip took 9 h 10 min. What

Question 1020280: A pilot flew a jet from city A to city B, a distance of 2200 mi. On the return trip, the average speed was 20% faster than the outbound speed. The round-trip took 9 h 10 min. What was the speed from city A to city B?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = plane's speed for A to B
= plane's speed from B to A
Let = plane's time in hrs going from A to B
= plane's time in hrs going from B to A
( I converted 10 min to .1667 hrs )
-----------------------------
Trip from A to B:
(1)
Trip from B to A:
(2)
-----------------------------
(1)
Plug (1) into (2)
(2)
(2)
(2)
(2)
(2)
(2)
-------------
(1)
(1)
(1) mi/hr
From A to B, the speed was 440 mi/hr
-------------
check:
(2)
(2)
(2)
(2)
(2)
(2)
OK
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