document.write( "Question 626943: An airplane flight took 2 hrs. to travel 780 miles with the headwind and the return trip with the tailwind only takes 1.5 hrs. Find the speed of the plane in still air and the speed of the wind.
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Algebra.Com's Answer #394528 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "An airplane flight took 2 hrs. to travel 780 miles with the headwind 
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document.write( "and the return trip with the tailwind only takes 1.5 hrs. 
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document.write( "Let p and w  represent the speed of the plane in still air and the speed of the wind respectively
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document.write( "Question states*** Note: D = rt or  t = D/r
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document.write( " 2 = 780/(p-w)  ⇒ (p-w) = 780/2 = 390  ⇒ p = 
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document.write( " 1.5 = 780/(p+w)    
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document.write( "p+w = 780/1.5= 520   
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document.write( " + w = 520
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document.write( "       2w = 130  
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document.write( "        w = 65mph   and p = 455mph    || p = 
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document.write( "and****Checking our Answer
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