document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=215231>Question 215231</A>: <I><SPAN STYLE=\"word-break: break-all;\"> jacinta can solve 20 multiplication questions in one minute. her friend can solve the same number in 3 minutes. how long will it take both of them together to solve 20 questions?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #162641 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=162641\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> jacinta can solve 20 multiplication questions in one minute. her friend can solve the same number in 3 minutes. how long will it take both of them together to solve 20 questions?<BR>\n" );
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document.write( "Really, in this case, the fact that there are 20 questions is not relevant.<BR>\n" );
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document.write( "Let x = time it takes for both to solve <BR>\n" );
document.write( "x(1/1 + 1/3) = 1<BR>\n" );
document.write( "x(3/3 + 1/3) = 1<BR>\n" );
document.write( "x(4/3) = 1<BR>\n" );
document.write( "x(4) = 3<BR>\n" );
document.write( "x = 3/4 of a minute<BR>\n" );
document.write( "Or<BR>\n" );
document.write( "(3/4) * 60 = 45 seconds </SPAN>\n" );
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