SOLUTION: An airplane flew for 5 hours with a tail wine of 25 kph. The return flight against the same wind took 5.5 hours. Find the speed of the airplane in still air.

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Question 130881This question is from textbook algebra 1
: An airplane flew for 5 hours with a tail wine of 25 kph. The return flight against the same wind took 5.5 hours. Find the speed of the airplane in still air.This question is from textbook algebra 1

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
5(X+25)=5.5(X-25)
5X+125=5.5X-137.5
5X-5.5X=-137.5-125
-.5X=-262.5
X=-262.5/.5
X=525 ANSWER FOR THE SPEED OF THE PLANE IN STILL AIR.
PROOF:
5(525+25)=5.5(525-25)
5*550=5.5*500
2750=2750