document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=256460>Question 256460</A>: <I><SPAN STYLE=\"word-break: break-all;\">  if one person takes 30 min to paint a room and another person takes 45 min how long would it take if they did it together.  <BR>\n" );
document.write( " what formula would I use to solve this? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188552 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=188552\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "Let's represent the amount of time the can both do it with \"x\". Then 1/x will show which both can do. <BR>\n" );
document.write( "We'll show one person doing the work as 1/30 and the other as 1/45. We can add these and it will equal 1/x shown like this:<BR>\n" );
document.write( "1/30 + 1/45 = 1/x Now multiply by 90x will give us:<BR>\n" );
document.write( "3x + 2x = 90 combine like terms will be:<BR>\n" );
document.write( "5x=90 Divide both sides by 5<BR>\n" );
document.write( "x=18<BR>\n" );
document.write( "So it will take 18 minutes if both work together. <BR>\n" );
document.write( "Make sense?<BR>\n" );
document.write( "RJ <BR>\n" );
document.write( "Check out a new math book at <BR>\n" );
document.write( "www.math-unlock.com </SPAN>\n" );
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