document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=272384>Question 272384</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Working together, Ethel, Beryl, and Cora can dig a drainage ditch in 3.5 hours. Working alone, Coral can do it in 10 hours, while Ethel can do it 2 hours faster than Beryl. How long will it take Beryl to dig the ditch by herself? (Round your answer to two decimal places.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #199270 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=199270\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (3.5 / 10) + (3.5 / (B - 2)) + (3.5 / B) = 1\r<BR>\n" );
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document.write( "3.5 (B - 2) (B) + 3.5 (10) (B) + 3.5 (10) (B-2) = 10 (B) (B - 2)\r<BR>\n" );
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document.write( "3.5B^2 - 7B + 35B + 35B - 70 = 10B^2 - 20B\r<BR>\n" );
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document.write( "0 = 6.5B^2 - 83B + 70\r<BR>\n" );
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document.write( "use quadratic formula to find B </SPAN>\n" );
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