document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=597798>Question 597798</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A company developed a cure for a disease that inflicts 12% of the world's population (World Population is 6,600,000,000). A single dose of 1mL of cure per person is enough. If the cure is produced in 50 gallon vats, how many vats would be needed?? <BR>\n" );
document.write( "Thanks so much and I would like to know how to do this problem for my Exam that is coming up :)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #378339 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=378339\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 12% of 6.6 billion is 0.12*6.6 = 0.792\r<BR>\n" );
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document.write( "So 12% of 6.6 billion is 792 million.\r<BR>\n" );
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document.write( "Therefore, 792 million people have this disease.\r<BR>\n" );
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document.write( "Now we need to convert 50 gallons into milliliters. \r<BR>\n" );
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document.write( "It turns out that \r<BR>\n" );
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document.write( "1 gallon = 3785.41178 mL\r<BR>\n" );
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document.write( "Note: this is something you either memorize or you have to look up.\r<BR>\n" );
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document.write( "Multiply both sides by 50 to get\r<BR>\n" );
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document.write( "50*1 gallon = 50*3785.41178 mL\r<BR>\n" );
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document.write( "50 gallon = 189270.589 mL\r<BR>\n" );
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document.write( "So 50 gallons converts to 189,270.589 mL. Round down to get 189,270\r<BR>\n" );
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document.write( "This means that one 50 gallon vat can cure 189,270 people.\r<BR>\n" );
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document.write( "Now divide 792 million (7.92 x 10^8) by 189,270 (1.8927 x 10^5) to get\r<BR>\n" );
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document.write( "(7.92 x 10^8)/(1.8927 x 10^5)\r<BR>\n" );
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document.write( "(7.92/1.8927) x ((10^8)/(10^5))\r<BR>\n" );
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document.write( "4.18449833571089 x 10^(8-5)\r<BR>\n" );
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document.write( "4.18449833571089 x 10^3\r<BR>\n" );
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document.write( "and then convert this answer to standard decimal notation to get 4,184.4983357108\r<BR>\n" );
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document.write( "and then round up to get the final answer of <font color=\"red\">4,185</font> vats </SPAN>\n" );
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