document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=99700>Question 99700</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sally takes 4 hours to paint a room. harry takes 6 hours how long for both of them to paint one room? which is 2.42 hours for botn of them together<BR>\n" );
document.write( "can you please show me the formula how this answer was derived thankyou  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #72573 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=72573\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sally takes 4 hours to paint a room. harry takes 6 hours how long for both of them to paint one room? which is 2.42 hours for both of them together<BR>\n" );
document.write( "can you please show me the formula how this answer was derived><BR>\n" );
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document.write( "Here is a simple method to do these kind of problems<BR>\n" );
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document.write( "Let x = time required when working together<BR>\n" );
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document.write( "Let the completed job = 1<BR>\n" );
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document.write( "That means each one will do a fraction of the job and the two fractions = 1<BR>\n" );
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document.write( "J's fraction + H's fraction = completed job<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F4 ALIGN=MIDDLE  ALT=\"x%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F6 ALIGN=MIDDLE  ALT=\"x%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1<BR>\n" );
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document.write( "Multiply the equation by 12, to get rid of the denominators:<BR>\n" );
document.write( "12*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F4 ALIGN=MIDDLE  ALT=\"x%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 12*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F6 ALIGN=MIDDLE  ALT=\"x%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 12(1)<BR>\n" );
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document.write( "Cancel out the denominators, and you have a simple equation:<BR>\n" );
document.write( "3x + 2x = 12<BR>\n" );
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document.write( "5x = 12<BR>\n" );
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document.write( "x = 12/5<BR>\n" );
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document.write( "x = 2.4 hrs, (not sure why you have 2.42 hrs as the answer)<BR>\n" );
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document.write( "Check our solution in the original equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.4%2F4 ALIGN=MIDDLE  ALT=\"2.4%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.4%2F6 ALIGN=MIDDLE  ALT=\"2.4%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1<BR>\n" );
document.write( "    .6  +  .4  =  1<BR>\n" );
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document.write( "Did this help you?\r<BR>\n" );
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document.write( "  </SPAN>\n" );
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