document.write( "Question 42802: A plane flies 720 mi. against a steady 30-mi/h headwind and then returns to the same point with the wind. If the entire trip takes 10 h what is the plane's speed in still air? \n" ); document.write( "
Algebra.Com's Answer #27869 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
Posted this complete solution a couple of days ago...the plane in still air travels at 150 mph...thus 4 hours at 180 and 6 hours at 120... \n" ); document.write( "
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