document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=620932>Question 620932</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For every 100 customers that came in the store 75 bought milk. If  only 20 came in the store yesterday how many bought milk<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #390526 by </B><A HREF=/tutors/aboutme.mpl?userid=math-vortex><B>math-vortex(648)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math-vortex><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=math-vortex><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=390526\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi, there--<BR>\n" );
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document.write( "This is a proportion problem. We want to know how many customers bought milk if only 20 customers came into the store.<BR>\n" );
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document.write( "Let x be the number of customers who bought milk if only 20 customers came into the store.<BR>\n" );
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document.write( "In the first case, the ratio of milk-buying customers to total customers is 75 to 100, or 75/100.<BR>\n" );
document.write( "In the second case, the ratio is x to 20, or x/20.<BR>\n" );
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document.write( "We set these ratios equal to each other to make a proportion. Then we solve for the value of x that makes the proportion true.<BR>\n" );
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document.write( "We can use the idea of scale factor to solve for x. First look at the two denominators. The scale factor from 100 to 20 is 1/5 because 100*(1/5)=20.<BR>\n" );
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document.write( "The scale factor from 75 to x in the numerator must be the same since the ratios are equivalent. We multiply 75*(1/5) to find x. So x=15.<BR>\n" );
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document.write( "In the context of this problem, x=15 means that 15 customers bought milk if only 20 customers came into the store.<BR>\n" );
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document.write( "Hope this helps. Feel free to email me if you have questions about this solution.<BR>\n" );
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document.write( "Ms.Figgy<BR>\n" );
document.write( "math.in.the.vortex@gmail.com\r<BR>\n" );
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