SOLUTION: a plane flew 720 miles with a steady 30mi/h tailwind then returned to the starting point, flying against the same wind. if the round trip took 10 hours, what was the plane's airspe

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Question 869497: a plane flew 720 miles with a steady 30mi/h tailwind then returned to the starting point, flying against the same wind. if the round trip took 10 hours, what was the plane's airspeed?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
R*T=D, rate, time, distance.

r = speed in still air

__________________speed__________time___________distance
With______________r+30___________720%2F%28r%2B30%29_______________720
Against___________r-30___________720%2F%28r-30%29_______________720
Total____________________________10

The table shows a time sum equation to solve for the single variable, r.