document.write( "Question 184910: four pencils and five pens cost $2.00.
\n" ); document.write( "three pencils and four pens cost $1.58.
\n" ); document.write( "find the cost of a pencil and the cost of a pen \n" ); document.write( "
Algebra.Com's Answer #138758 by jojo14344(1513)\"\" \"About 
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\n" ); document.write( "1st Condiion:
\n" ); document.write( "\"4Pencil%2B5Pens=2.00\"
\n" ); document.write( "2nd Condition:
\n" ); document.write( "\"3Pencils%2B4Pens=1.58\"
\n" ); document.write( "In 1st Condition we get, \"4Pencils=2.00-5Pens\",
\n" ); document.write( "\"cross%284%29%2APencils%2Fcross%284%29=%282.00-5Pens%29%2F4=%282.00%2F4%29-%285%2F4%29Pens\"
\n" ); document.write( "\"Pencils=%281%2F2%29-%285%2F4%29Pens\",EQN 1
\n" ); document.write( "Susbt. EQN 1 in Condition 2:
\n" ); document.write( "\"3%28%281%2F2%29-%285%2F4%29Pens%29%2B4Pens=1.58\"
\n" ); document.write( "\"%283%2F2%29-%2815%2F4%29Pens%2B4Pens=1.58\"
\n" ); document.write( "\"%28-15%2B16%29Pens%2F4=1.58-%283%2F2%29\"
\n" ); document.write( "\"%281%2F4%29Pens=%283.16-3%29%2F2=0.16%2F2\"
\n" ); document.write( "Cross Multiply:
\n" ); document.write( "\"2Pens=4%2A0.16=0.64\"
\n" ); document.write( "\"cross%282%29%2APens%2Fcross%282%29=cross%280.64%290.32%2Fcross%282%29\"
\n" ); document.write( "\"highlight%28Pens=0.32%2Feach%29\"
\n" ); document.write( "In EQN 1:--->\"Pencils=%281%2F2%29-%285%2F4%29%280.32%29=%281%2F2%29-0.40=0.50-0.40\"
\n" ); document.write( "\"highlight%28Pencils=0.10%2Feach%29\"
\n" ); document.write( "In doubt?, Go back Condition 1:
\n" ); document.write( "\"4%280.10%29%2B5%280.32%29=2.00\"
\n" ); document.write( "\"0.40%2B1.6=2.00\"
\n" ); document.write( "\"2.00=2.00\"
\n" ); document.write( "Go back Condition 2:
\n" ); document.write( "\"3%280.10%29%2B4%280.32%29=1.58\"
\n" ); document.write( "\"0.30%2B1.28=1.58\"
\n" ); document.write( "\"1.58=1.58\"
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "
\n" );