document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1181934>Question 1181934</A>: <I><SPAN STYLE=\"word-break: break-all;\"> PLEASE HELP AND EXPLAIN\r<BR>\n" );
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document.write( "A mechanical device requires 420 J of work to do 230 J of work in lifting a crate . What is the efficiency of the device ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #811891 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=811891\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Eff=+%28Output%2FInput%29%2A100 ALIGN=MIDDLE  ALT=\"Eff=+%28Output%2FInput%29%2A100\"   DISABLED_style= \"max-width:90%; height:auto;\" >% <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=Eff=%28230%2F420%29%2A100+=+54.8 ALIGN=MIDDLE  ALT=\"Eff=%28230%2F420%29%2A100+=+54.8\"   DISABLED_style= \"max-width:90%; height:auto;\" >% or  rounded <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=55 ALIGN=MIDDLE  ALT=\"55\"   DISABLED_style= \"max-width:90%; height:auto;\" >% </SPAN>\n" );
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