SOLUTION: A 590 mile, 5 hour plane trip was flown at two speeds. For the first part of the trip, the average speed was 120mph. for the remainder of the trip, the average speed was 115mph. ho
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Question 374313: A 590 mile, 5 hour plane trip was flown at two speeds. For the first part of the trip, the average speed was 120mph. for the remainder of the trip, the average speed was 115mph. how long did the plane fly at 120mph?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = distance flown on the 1st part
Let = time for 1st part
given:
(1)
(2)
(3)
-------------
This is 3 equations and 3 unknowns, so it's solvable
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