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

Algebra ->  Customizable Word Problem Solvers  -> Travel -> 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      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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(39623) About Me  (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

%28w%2B800%29%282%261%2F3%29=3%28800-w%29
Simplify and solve.

Answer by richwmiller(17219) About Me  (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