document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=159538>Question 159538</A>: <I><SPAN STYLE=\"word-break: break-all;\"> four hot dogs and soft drink costs $6.30, whereas one hot dog and four soft drinks cost $4.20. What is the total cost of one hot dog and one soft drink </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #117639 by </B><A HREF=/tutors/aboutme.mpl?userid=midwood_trail><B>midwood_trail(310)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=midwood_trail><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=117639\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Four hot dogs and a soft drink costs $6.30, whereas one hot dog and four soft drinks cost $4.20. What is the total cost of one hot dog and one soft drink?\r<BR>\n" );
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document.write( "Let h = hot dog\r<BR>\n" );
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document.write( "Let s = soft drink\r<BR>\n" );
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document.write( "4h + s = 6.30...Equation A\r<BR>\n" );
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document.write( "h + 4s = 4.20...Equation B\r<BR>\n" );
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document.write( "We have two equations in two unknowns.  The unknowns are the variables h and s.\r<BR>\n" );
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document.write( "I will solve for s in Equation A by subtracting 4h from both sides.\r<BR>\n" );
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document.write( "s = -4h + 6.30\r<BR>\n" );
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document.write( "I will now replace s in Equation B with -4h + 6.30 to find the price of one hot dog.\r<BR>\n" );
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document.write( "h + 4(-4h + 6.30) = 4.20\r<BR>\n" );
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document.write( "h -16h + 25.2 = 4.20\r<BR>\n" );
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document.write( "-15h = -25.2 + 4.20\r<BR>\n" );
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document.write( "-15h = -21\r<BR>\n" );
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document.write( "Divide both sides by -15.\r<BR>\n" );
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document.write( "h = -21/-15\r<BR>\n" );
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document.write( "h = 21/15\r<BR>\n" );
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document.write( "h = 7/5\r<BR>\n" );
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document.write( "h = $1.40\r<BR>\n" );
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document.write( "We now know the value of one hot dog.  \r<BR>\n" );
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document.write( "Go back to EITHER Equation A or B, replace h with 1.40, do the algebra and you will find the price of one soft drink.\r<BR>\n" );
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document.write( "I'll let you do that.\r<BR>\n" );
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document.write( "If you get stuck, write back.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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