document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=966651>Question 966651</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a particular classroom there are 1.25 girls for every 2 boys.\r<BR>\n" );
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document.write( "If this ratio is consistent across the school, how many boys are there in this school with a total student population of 650?<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 #590787 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=590787\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let b = number of boys<BR>\n" );
document.write( "let g = number of girls<BR>\n" );
document.write( "b + g = 650\r<BR>\n" );
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document.write( "the ratio of girls to boys is equal to g/b which is equal to 1.25 / 2\r<BR>\n" );
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document.write( "in the ratio equation of g/b = 1.25 / 2, cross multiply to get 2 * g = 1.25 * b.\r<BR>\n" );
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document.write( "solve for g to get g = 1.25 * b / 2.\r<BR>\n" );
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document.write( "you are solving for g, because you want the original eqution of b + g = 650 to be in terms of b only.\r<BR>\n" );
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document.write( "this is accomplished by solving for g in terms of b and then using what g is equal to in terms of b rather than using g.\r<BR>\n" );
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document.write( "in the equation of b + g = 650, replace g with 1.25 * b / 2 to get:\r<BR>\n" );
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document.write( "b + g = 650 becomes b + 1.25 * b / 2 = 650\r<BR>\n" );
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document.write( "multiply both sides of this eqution by 2 to get:\r<BR>\n" );
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document.write( "2 * b + 1.25 * b = 650 * 2\r<BR>\n" );
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document.write( "combine like terms to get 3.25 * b = 650 * 2\r<BR>\n" );
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document.write( "simplify to get 3.25 * b = 1300.\r<BR>\n" );
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document.write( "divide both sides of this equation by 3.25 to get b = 1300 / 3.25 = 400.\r<BR>\n" );
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document.write( "that's your solution.\r<BR>\n" );
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document.write( "b = 400\r<BR>\n" );
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document.write( "you also get:\r<BR>\n" );
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document.write( "g = 650 - 400 = 250<BR>\n" );
document.write( "b + g = 400 + 250 = 650\r<BR>\n" );
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