document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=118789>Question 118789</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a loading crew estimates that it can load 8 boxes in 20 mins.at this rate,how many boxes could it load in 1 hr? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #86929 by </B><A HREF=/tutors/aboutme.mpl?userid=bucky><B>bucky(2189)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bucky><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=86929\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You can do this by setting up a proportion. Start with the ratio of 8 boxes to 20 minutes.<BR>\n" );
document.write( "Then notice that an hour is 60 minutes. Since you don't know the number of boxes in 60 minutes<BR>\n" );
document.write( "you can set up the ratio of X boxes to 60 minutes. Setting these two ratios equal gives you<BR>\n" );
document.write( "the proportion:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2F20+=+X%2F60 ALIGN=MIDDLE  ALT=\"8%2F20+=+X%2F60\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "An easy way to work proportions is to cross-multiply ... multiply the numerator on one side<BR>\n" );
document.write( "by the denominator on the other side. Then multiply the numerator on the other side by the<BR>\n" );
document.write( "denominator on the opposite side. Then set the two products equal.<BR>\n" );
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document.write( "Hard to explain, but easy to do. Multiply the 8 (left side numerator) by 60 (right side <BR>\n" );
document.write( "denominator) and set this equal to the product you get by multiplying X (right side numerator)<BR>\n" );
document.write( "by 20 (left side denominator). In equation form this is:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2A60+=+20%2AX ALIGN=MIDDLE  ALT=\"8%2A60+=+20%2AX\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Multiplying out the left side results in:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=480+=+20%2AX ALIGN=MIDDLE  ALT=\"480+=+20%2AX\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Finally, you can solve for X by dividing both sides by 20 and you get:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=480%2F20+=+X ALIGN=MIDDLE  ALT=\"480%2F20+=+X\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "which simplifies to:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=24+=+X ALIGN=MIDDLE  ALT=\"24+=+X\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "So in 60 minutes (1 hour) the crew could load 24 boxes.<BR>\n" );
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document.write( "You can also do this problem in your head. Just say that if you can do 8 boxes in 20 minutes<BR>\n" );
document.write( "then you can do 16 boxes in 40 minutes and adding another 8 boxes in the remaining 20<BR>\n" );
document.write( "minutes results in 24 boxes in 60 minutes.<BR>\n" );
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document.write( "Hope this helps you to understand this problem a little better.<BR>\n" );
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document.write( " </SPAN>\n" );
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