document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=644410>Question 644410</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in  a chemistry lab, stephanie has to make a 37 milliliter solution that is 12% HCL. All that is in the lab is 8% and 15%. How many mL of each solution should she use to obtain the desired amount? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #405037 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=405037\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> in a chemistry lab, stephanie has to make a 37 milliliter solution that is 12% HCL. All that is in the lab is 8% and 15%. How many mL of each solution should she use to obtain the desired amount?<BR>\n" );
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document.write( "Let x = amount (mL) of 8%<BR>\n" );
document.write( "then<BR>\n" );
document.write( "37-x = amount (mL) of 15%<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".08x + .15(37-x) = .12(37)<BR>\n" );
document.write( ".08x + 5.55-.15x = 4.44<BR>\n" );
document.write( "5.55-.07x = 4.44<BR>\n" );
document.write( "-.07x = -1.11<BR>\n" );
document.write( "x = -1.11/(-.07)<BR>\n" );
document.write( "x = 15.86 mL (8%)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "15%:<BR>\n" );
document.write( "37-x = 37-15.86 =  21.14 mL\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );