document.write( "Question 929409: An airplane travels 600 miles against the wind in 4 hours, and makes the return trip with the same wind in 2 hours. Find the speed of the wind. \n" ); document.write( "
Algebra.Com's Answer #564258 by TimothyLamb(4379)\"\" \"About 
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x = wind speed
\n" ); document.write( "y = airplane speed in still air
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\n" ); document.write( "s = d/t
\n" ); document.write( "---
\n" ); document.write( "against the wind:
\n" ); document.write( "y - x = 600/4
\n" ); document.write( "---
\n" ); document.write( "with the wind:
\n" ); document.write( "y + x = 600/2
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\n" ); document.write( "put the system of linear equations into standard form
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\n" ); document.write( "x - y = -150
\n" ); document.write( "x + y = 300
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\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "solution:
\n" ); document.write( "x = wind speed = 75 mph
\n" ); document.write( "y = airplane speed in still air = 225 mph
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "--- \n" ); document.write( "
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