document.write( "Question 799039: Two planes at the same time leave John F. Kennedy International Airport at 9:30am. One plane flies 100 mph faster than the other plane. In two hours the two planes will be 2,000 miles apart. What is the speed of each plane? \n" ); document.write( "
Algebra.Com's Answer #482467 by Finavon(81)\"\" \"About 
You can put this solution on YOUR website!
Assume flying in OPPOSITE directions and constant speeds:
\n" ); document.write( "Speed S and (S+100) {distance in 1 hour}
\n" ); document.write( "in 1 hour 1000 miles apart
\n" ); document.write( "S + (S+100) = 1000
\n" ); document.write( "2S = 900
\n" ); document.write( "Speeds are 450 and 550 mph
\n" ); document.write( "
\n" );