document.write( "Question 401155: Two jets leave Chicago at the same time, one flying due west at 750km/hr, the other flying due east at 850km/hr. After how long will the planes be 4000 km apart?
\n" ); document.write( "~Thanks, David
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Algebra.Com's Answer #283909 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Hi
\n" ); document.write( "Let x represent time traveled by each of the planes
\n" ); document.write( "Question states***
\n" ); document.write( " 750kmph*x + 850kmph*x = 4000km
\n" ); document.write( " x = 4000km/1600kmph
\n" ); document.write( " x = 2.5hr, time traveled when 4000km apart\r
\n" ); document.write( "\n" ); document.write( "CHECKING our Answer***
\n" ); document.write( " 750*2.5 + 850*2.5 = 4000km \n" ); document.write( "
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