document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=245036>Question 245036</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A group of ten 6- and 12- volt batteries are wired in a series shown at the right.  The sum of their voltages is 84 volts.  How many of each type of battery are used?\r<BR>\n" );
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document.write( "Could someone please explain how to do this problem?  I apprieciate the help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #179143 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=179143\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let s = no. of 6 volt batteries<BR>\n" );
document.write( "Let t = no. of 12 volt batteries<BR>\n" );
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document.write( "Write an equation for each statement:<BR>\n" );
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document.write( "\"A group of ten 6- and 12- volt batteries are wired in a series\"<BR>\n" );
document.write( "The no. of batteries equation<BR>\n" );
document.write( "s + t = 10<BR>\n" );
document.write( "Arrange for substitution<BR>\n" );
document.write( "s = (10-t)<BR>\n" );
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document.write( "\" The sum of their voltages is 84 volts.\"<BR>\n" );
document.write( "the total volts equation<BR>\n" );
document.write( "6s + 12t = 84<BR>\n" );
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document.write( "Substitute (10-t) for s in the above equation<BR>\n" );
document.write( "6(10-t) + 12t = 84<BR>\n" );
document.write( "60 - 6t + 12t = 84<BR>\n" );
document.write( "-6t + 12t = 84 - 60<BR>\n" );
document.write( "6t = 24<BR>\n" );
document.write( "t = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=24%2F6 ALIGN=MIDDLE  ALT=\"24%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "t = 4 ea 12v batteries<BR>\n" );
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document.write( "then<BR>\n" );
document.write( "10 - 4 = 6 ea 6v batteries<BR>\n" );
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document.write( "Check solution in the total volts equation<BR>\n" );
document.write( "6(6) + 4(12) = 84\r<BR>\n" );
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