document.write( "Question 900496: Mary and Bill live
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Algebra.Com's Answer #545983 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
d = rt = tr
\n" ); document.write( "2(b+7) + 2b = 210
\n" ); document.write( " 4b = 196
\n" ); document.write( " b = 49mph, Bill's speed. Mary went 56mph \"49%2B7%29\"
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