document.write( "Question 1094426: An airplane encountered a head wind during a flight between Joppetown and Jawsburgh which took 4 hours and 36 minutes. The return flight took 4 hours. If the distance from Joppetown to Jawsburgh is 1400 ​miles, find the airspeed of the plane​ (the speed of the plane in still​ air) and the speed of the​ wind, assuming both remain constant. \n" ); document.write( "
Algebra.Com's Answer #708980 by addingup(3677)\"\" \"About 
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distance/time = rate
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\n" ); document.write( "1400/(240 + x) = 1400/276 <---hours to minutes
\n" ); document.write( "(x+240)/1400 = 69/350
\n" ); document.write( "x + 240 = 69/350 * 1400/1
\n" ); document.write( "x + 240 = 276
\n" ); document.write( "x = 36
\n" ); document.write( "36/2 = 18
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\n" ); document.write( "1400/240+18 = 5.43; 1400/276-18 = 5.43 Correct\r
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