document.write( "Question 818576: i know how to do the math, i just need help setting up the equation and how to set up variables.\r
\n" ); document.write( "\n" ); document.write( "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?
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Algebra.Com's Answer #492638 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
s = d / t
\n" ); document.write( "d = s * t
\n" ); document.write( "---
\n" ); document.write( "return time: T hours
\n" ); document.write( "---
\n" ); document.write( "outbound:
\n" ); document.write( "D = 525(T + 40/60)
\n" ); document.write( "---
\n" ); document.write( "return:
\n" ); document.write( "D = 600T
\n" ); document.write( "---
\n" ); document.write( "525(T + 40/60) = 600T
\n" ); document.write( "525T + 525(2/3) = 600T
\n" ); document.write( "75T = 350
\n" ); document.write( "T = 14/3
\n" ); document.write( "---
\n" ); document.write( "D = 600T
\n" ); document.write( "D = 600(14/3)
\n" ); document.write( "D = 2800
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "2800 miles
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