document.write( "Question 1136389: A tour group split into two groups when waiting in line for food at a fast food counter. The first group bought 8 slices of pizza and 7 soft drinks for $34.49. The second group bought 5 slices of pizza and 5 soft drinks for $22.40. How much does one slice of pizza cost?
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Algebra.Com's Answer #754173 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "Since 5 slices of pizza and 5 soft drinks cost $22.40, it implies that \r\n" ); document.write( "\r\n" ); document.write( " 1 slice of pizza and 1 soft drink cost $22.40/5 = $4.48.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Now you can easily answer the problem's question by subtracting 7 times $4.48 from $34.49. It gives you\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " one slice of pizza costs $34.49 - 7* $4.48 = $3.13. ANSWER\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "-------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Notice that I answered the question without solving equations.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "This problem was designed and is expected to be solved exactly in this way - it is a \"good style\" of solving such problems.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is the major lesson for you to learn from my solution.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To see other similar problems, solved in similar way, look into the lesson\r \n" ); document.write( "\n" ); document.write( " - Solving mentally word problems on two equations in two unknowns \r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r \n" ); document.write( "\n" ); document.write( " - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lesson is the part of this online textbook under the topic \"Systems of two linear equations in two unknowns\".\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I \n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |