document.write( "Question 19107: It takes a plane 40 min. longer to fly from boston to los angeles at 525 mi/h than it does to return at 600 mi/h. how far apart are the cities? \n" ); document.write( "
Algebra.Com's Answer #9177 by Paul(988)\"\" \"About 
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Let x be distance
\n" ); document.write( "525(x+40)=600x
\n" ); document.write( "525x+21000=600x
\n" ); document.write( "525x+21000-525x=600x-525x
\n" ); document.write( "21000=75x (divide both sides by 7)
\n" ); document.write( "280 = x
\n" ); document.write( "Therefore they are 280 miles apart.
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