document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1115493>Question 1115493</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A house wife find that 5vcans of condensed milk and 3 jars of instant coffee cost $27 while 12 cans of condensed milk and jars of instant coffee cost $49.40.find the total cost for 7 cans of condensed milk and 2 jars of instant coffee? \r<BR>\n" );
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document.write( "The bill for 6 cups of coffee and 7 cups of tea is $5.90  while the bill for 18 cups of coffee and 5 cup of tea is $9.70.find the total bill for 7 cups of coffee and 6 cups of tea?<BR>\n" );
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document.write( "A man bought 8 kiwi fruits and 7 pears for $4.10 while another man bought  4 kiwi fruits and 9 pears for $3.70.What is the cost of each kiwi fruit and each pear?<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 #730347 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=730347\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 12 cans of condensed milk and how many jars of instant coffee?<BR>\n" );
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document.write( "6 cups of coffee and 7 cups of tea $5.90<BR>\n" );
document.write( "18 cups of coffee and 5 cup of tea $9.70<BR>\n" );
document.write( "find 7 cups of coffee and 6 cups of tea<BR>\n" );
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document.write( "6x + 7y = 5.90 multiply all times 3:<BR>\n" );
document.write( "18x + 21y = 17.70 (1)<BR>\n" );
document.write( "18x + 5y = 9.70 subtract this equation from (1):<BR>\n" );
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document.write( "18x + 21y = 17.70<BR>\n" );
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document.write( "18x + 5y = 9.70<BR>\n" );
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document.write( "0x + 16y = 8<BR>\n" );
document.write( "16y = 8<BR>\n" );
document.write( "y = 0.50 tea is 0.50 per cup<BR>\n" );
document.write( "6x + 7y = 5.90<BR>\n" );
document.write( "6x + 7(0.50) = 5.90<BR>\n" );
document.write( "6x + 3.50 = 5.90<BR>\n" );
document.write( "6x = 2.40<BR>\n" );
document.write( "x = 0.40 coffee is 0.40 per cup<BR>\n" );
document.write( "Now you find the cost of 7 cups of coffee and 6 cups of tea. Use your calculator.<BR>\n" );
document.write( "The process is the same for all 3 problems, follow my work to solve the other two.<BR>\n" );
document.write( "Happy learning,<BR>\n" );
document.write( "John\r<BR>\n" );
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