document.write( "Question 181900: two jets leave chicago at 8 a.m, one traveling north at 650 km/h and the other south at 750km/h. At what time will they be 3500 km apart? \n" ); document.write( "
Algebra.Com's Answer #136524 by Alan3354(69443)\"\" \"About 
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Their speed relative to each other is the sum, 650 + 750 = 1400.
\n" ); document.write( "3500/1400 = 2.5 hours.
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