document.write( "Question 1095485: The cost of three notebooks and six pens is $18.51 The cost of three notebooks and 10 pens is $24.87 Determine the cost of one notebook and the cost of one pen. \n" ); document.write( "

Algebra.Com's Answer #710003 by ikleyn(52909) $\"\"$ $\"About$

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\n" ); document.write( "HINT: The difference of the two costs IS EXACTLY the cost of 4 pens.\r
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document.write( "    1.  This problem is for MENTAL solution.\r\n" );
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document.write( "    2.  You do not need solve system of equations to get the answer.\r\n" );
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