document.write( "Question 701023: \r
\n" ); document.write( "\n" ); document.write( "Two planes leave an airport at the same time. One is flying south at 450 mph, and the other if lying north at 675 mph. When will they be 3600 miles apart?
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Algebra.Com's Answer #432150 by checkley79(3341)\"\" \"About 
You can put this solution on YOUR website!
D=RT
\n" ); document.write( "3,600=450T+675T
\n" ); document.write( "3,600=1,125T
\n" ); document.write( "T=3,600/1,125
\n" ); document.write( "T=3.2 HOURS ANS.
\n" ); document.write( "PROOF:
\n" ); document.write( "3,600=450*3.2+675*3.2
\n" ); document.write( "3,600=1,440+2,160
\n" ); document.write( "3,600=3,600
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