document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131850>Question 1131850</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At a candy store, Erika bought 3 kilograms of cinnamon red hots and 1 kilogram of gummy bears for $21.00. Meanwhile, Irene bought 3 kilograms of cinnamon red hots and 3 kilograms of gummy bears for $39.00. What is the cost of one kilogram of each type of candy?\r<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 #748597 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13206)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=748597\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Using formal algebra on this problem is good exercise in learning how to solve problems using algebra.<br><BR>\n" );
document.write( "However, note that the formal algebraic solution does exactly what you can do informally with logical reasoning.<br><BR>\n" );
document.write( "The difference between the two purchases was 2 additional kg of gummy bears for an additional $18; that means the cost of the gummy bears is $9 per kg.<br><BR>\n" );
document.write( "Then, knowing that, you can use either of the purchases to find the cost per pound of the cinnamon red hots.  For example, Erika bought 3 kg of cinnamon red hots and 1 kg of gummy bears for $21; the gummy bears cost $9, so the 3 kg of cinnamon red hots cost $12; so the cinnamon red hots cost $4 per kg. </SPAN>\n" );
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