document.write( "Question 144604: Two planes leave New York at 10 a.m., one heading for Europe at 900 km/h and one heading in the opposite direction at 300 km/h. At what time will they be 1 400 kn apart? How far has each traveled? \n" ); document.write( "
Algebra.Com's Answer #105340 by checkley77(12844)\"\" \"About 
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900x+300x=1,400
\n" ); document.write( "1,200x=1,400
\n" ); document.write( "x=1,400/1,200
\n" ); document.write( "x=1.167 hours they will be 1,400 km. apart.
\n" ); document.write( "proof:
\n" ); document.write( "900*1.167+300*1.167=1,400
\n" ); document.write( "1050+350=1,400
\n" ); document.write( "1,400=1,400
\n" ); document.write( "
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