SOLUTION: A jet has a top speed of 800 km/hr in still air. On a flight from Montreal to St. John's it took 2 1/3 hours with a tail wind. On the return flight to Montreal the jet took 3 hours

Question 1146681: A jet has a top speed of 800 km/hr in still air. On a flight from Montreal to St. John's it took 2 1/3 hours with a tail wind. On the return flight to Montreal the jet took 3 hours because it was flying directly into the wind. Find the speed of the wind that day.

Found 2 solutions by josgarithmetic, richwmiller:
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!

SPEED TIME DISTANCE WITH 800+w 2+(1/3) d AGAINST 800-w 3 d

Simplify and solve.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
s=800 kph
(s+w)*7/3=(s-w)*3
(800+w)*7=(800-w)*9
5600+7w=7200-9w
16w=1600
w=100

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