document.write( "Question 663247: Two airplanes, travelling in opposite directions, leave the airport at the same time. If one plane flies at 480 miles/hour and the other at 520 miles/hour, how long will it take before they are 2000 miles apart? \n" ); document.write( "
Algebra.Com's Answer #412683 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Hint: They are moving apart at the sum of their speeds.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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