document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=284891>Question 284891</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve the follow two problems!! \r<BR>\n" );
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document.write( "1/x-a=1/b, find x.\r<BR>\n" );
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document.write( "and\r<BR>\n" );
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document.write( "An apartment building contains 12 units consisting of one- and two-bedroom apartments that rent for $360 and $450 per month, respectively. When all units are rented, the total monthly rental is $4,950. What is the number of two-bedroom apartments?\r<BR>\n" );
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document.write( "Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #805027 by </B><A HREF=/tutors/aboutme.mpl?userid=CubeyThePenguin><B>CubeyThePenguin(3113)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=CubeyThePenguin><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=CubeyThePenguin><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=805027\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1/x - a = 1/b<BR>\n" );
document.write( "1/x = 1/b + a = (ab + 1)/b<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%2F%28ab%2B1%29 ALIGN=MIDDLE  ALT=\"b%2F%28ab%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "a = number of 1 bedroom apartments<BR>\n" );
document.write( "b = number of 2 bedroom apartments\r<BR>\n" );
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document.write( "a + b = 12<BR>\n" );
document.write( "360a + 450b = 4950\r<BR>\n" );
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document.write( "Multiply the first equation by 450.\r<BR>\n" );
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document.write( "450a + 450b = 5400<BR>\n" );
document.write( "360a + 450b = 4950\r<BR>\n" );
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document.write( "Subtract to get 90a = 450, so a = 5.\r<BR>\n" );
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document.write( "There were 5 one-bedroom apartments and 7 two-bedroom apartments. </SPAN>\n" );
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