document.write( "Question 1179647: 3 similar chocolate bars and 4 similar packets of candy weigh 200 g. 3 such
\n" ); document.write( "chocolate bars and 7 such packets of candy weigh 260 g. What is the weight of a
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Algebra.Com's Answer #809273 by ikleyn(52800)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "3 similar chocolate bars and 4 similar packets of candy weigh 200 g.
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\n" ); document.write( "\n" ); document.write( "            Actually,  this problem is intended for  MENTAL  solution without using equations.\r
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document.write( "Looking into the text, an attentive reader sees that\r\n" );
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document.write( "    - the difference between two purchases is 3 packets of candy\r\n" );
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document.write( "    - and the difference in weights between two purchases is 260-200 = 60 grams.\r\n" );
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document.write( "Hence, the weight of one packet of candy is   60/3 = 20 grams.\r\n" );
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document.write( "From it, the weight of 3 chocolate bars is  200 - 4*20 = 120 grams.\r\n" );
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document.write( "Hence, each chocolate bar weights  120/3 = 40 grams.\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many other similar  (and different)  problems,  solved in the same way,  look into the lesson\r
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\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
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\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
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\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
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