document.write( "Question 912849: Two trains left the station at the same time, one heading due east at 40 miles per hour and the other heading due west at 50 miles per hour. How far apart were they after 4 hours?
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\n" ); document.write( "A.
\n" ); document.write( " 160 miles
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\n" ); document.write( "B.
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\n" ); document.write( "C.
\n" ); document.write( " 360 miles
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\n" ); document.write( "D.
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Algebra.Com's Answer #554103 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
The speeds are added when going in opposite directions.
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\n" ); document.write( "d = r*t
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