document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=450613>Question 450613</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this!\r<BR>\n" );
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document.write( "\"Erica could do 10 math problems in 20 minutes. Penny could do 15 math problems in 25 minutes. If they worked together, how many minutes would it take Erica and Penny to do 30 math problems?\"\r<BR>\n" );
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document.write( "Thanks and have a great day! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #309939 by </B><A HREF=/tutors/aboutme.mpl?userid=rwm><B>rwm(914)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rwm><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=309939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Erica can do one  math problems in two  minutes and .5 in 1 minute<BR>\n" );
document.write( "Penny can do 15/25 in one minute<BR>\n" );
document.write( "Another way look at it<BR>\n" );
document.write( "Erica can do 30 problems in 60 minutes<BR>\n" );
document.write( "So Erica can do the whole job in 60 minutes<BR>\n" );
document.write( "Penny can do 30 problems in 50 minutes<BR>\n" );
document.write( "Penny can do the whole job in 50 minutes<BR>\n" );
document.write( "x/50+x/60=1\r<BR>\n" );
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document.write( "x/5+x/6=10<BR>\n" );
document.write( "6x+5x=300<BR>\n" );
document.write( "11x=300<BR>\n" );
document.write( "x=300/11<BR>\n" );
document.write( "x=27.27 minutes<BR>\n" );
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