document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=233246>Question 233246</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi. I can across this question in the practice Accuplacer test, and I cannot for the life of me figure out how to work it.\r<BR>\n" );
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document.write( "2. If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?\r<BR>\n" );
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document.write( "A. 2 hours and 24 minutes<BR>\n" );
document.write( "B. 3 hours and 12 minutes<BR>\n" );
document.write( "C. 3 hours and 44 minutes<BR>\n" );
document.write( "D. 4 hours and 10 minutes<BR>\n" );
document.write( "E. 4 hours and 33 minutes \r<BR>\n" );
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document.write( "I know that the answer is A, however I do not know how. Your help is greatly appreciated. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #172177 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=172177\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2. If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, <BR>\n" );
document.write( "how long will it take for both of them to paint the house together?<BR>\n" );
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document.write( "Here's an easy method to do these \"shared work\" problems <BR>\n" );
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document.write( "Let t = time required when they work together<BR>\n" );
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document.write( "Let the completed job = 1; (a painted house in this case)<BR>\n" );
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document.write( "Each person will do a fraction of the work, the two fractions add up to 1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F4 ALIGN=MIDDLE  ALT=\"t%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F6 ALIGN=MIDDLE  ALT=\"t%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1<BR>\n" );
document.write( "multiply equation by 12 to get rid of the denominators, results:<BR>\n" );
document.write( "3t + 2t = 12<BR>\n" );
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document.write( "5t = 12<BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2F5 ALIGN=MIDDLE  ALT=\"12%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = 2.4 hrs working together<BR>\n" );
document.write( "Convert .4 hrs to min: .4 * 60 = 24 min<BR>\n" );
document.write( "t = 2 hr 24 min<BR>\n" );
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document.write( "You can prove this to yourself:<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;\" > = <BR>\n" );
document.write( ".6 + .4 = 1<BR>\n" );
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document.write( "Wasn't that pretty easy to understand?? </SPAN>\n" );
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