document.write( "Question 647449: Two airplanes leave Chicago at the same time and fly in opposite directions. If one travels at 450 miles per hour and the other at 550 miles per hour, how long will it take for them to be 4000 miles apart? \n" ); document.write( "

Algebra.Com's Answer #406237 by Edwin McCravy(20056) $\"\"$ $\"About$

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They are separating at a rate of 450+550 or 1000 miles per hour, so it will
\n" ); document.write( "take 4 hours for them to separate 4000 miles. \n" ); document.write( "

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