document.write( "Question 736483: An L1011 traveled 645 mph with the wind and 575 mph against the wind. Find the speed of the plane in still air and the speed of the wind. \n" ); document.write( "

Algebra.Com's Answer #449850 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+p+\"$ = the speed of the plane in still air
\n" ); document.write( "Let $\"+w+\"$ = the wind speed
\n" ); document.write( " $\"+p+%2B+w+\"$ = the speed of the plane flying with the wind
\n" ); document.write( " $\"+p+-+w+\"$ = the speed of the plane flying against the wind
\n" ); document.write( "----------------
\n" ); document.write( "Flying with the wind:
\n" ); document.write( " $\"+645+=+p+%2B+w+\"$
\n" ); document.write( " $\"+575+=+p+-+w+\"$
\n" ); document.write( "Add the equations
\n" ); document.write( " $\"+1220+=+2p+\"$
\n" ); document.write( " $\"+p+=+610+\"$ mi/hr
\n" ); document.write( "and
\n" ); document.write( " $\"+645+=+610+%2B+w+\"$
\n" ); document.write( " $\"+w+=+35+\"$ mi/hr\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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