document.write( "Question 334380: two planes left an airport at noon.One flew east at a certain speed and the other flew west at twice the speed. The planes were 2700 mi apart in 3h.How fast was each plane flying? \n" ); document.write( "
Algebra.Com's Answer #239579 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Two planes left an airport at noon.
\n" ); document.write( "One flew east at a certain speed and
\n" ); document.write( "The other flew west at twice the speed.
\n" ); document.write( "The planes were 2700 mi apart in 3hrs.
\n" ); document.write( "How fast was each plane flying?
\n" ); document.write( "---------------------
\n" ); document.write( "East plane DATA:
\n" ); document.write( "rate = x mph ; time = 3 hrs ; distance = 3x miles
\n" ); document.write( "-----
\n" ); document.write( "West plane DATA;
\n" ); document.write( "rate = 2x mph ; time = 3 hrs ; distance = 6x miles
\n" ); document.write( "------
\n" ); document.write( "Equation:
\n" ); document.write( "distance + distance = 2700
\n" ); document.write( "3x+6x = 2700
\n" ); document.write( "9x = 2700
\n" ); document.write( "x = 300 mph (speed of the East plane)
\n" ); document.write( "2x = 600 mph (speed of the West plane)
\n" ); document.write( "==========================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
\n" );