document.write( "Question 855157: A book cost as much asa 3 pens.hamdan paid $56 for 3 books and 5 pens.what was the cost of 2books? \n" ); document.write( "

Algebra.Com's Answer #515117 by josgarithmetic(39620) $\"\"$ $\"About$

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p price of 1 pen
\n" ); document.write( "b price of 1 book\r
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\n" ); document.write( "\n" ); document.write( "One book is the price of three pens, so $\"b=3p\"$ .\r
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\n" ); document.write( "\n" ); document.write( "Hamden spent $\"3b%2B5p=56\"$ dollars. Do the substitution:
\n" ); document.write( " $\"3%283p%29%2B5p=56\"$
\n" ); document.write( " $\"9p%2B5p=56\"$
\n" ); document.write( " $\"14p=56\"$
\n" ); document.write( " $\"p=56%2F14=%287%2A8%29%2F%287%2A2%29\"$
\n" ); document.write( " $\"highlight%28p=4%29\"$ . One pen costs 4 dollars.
\n" ); document.write( "-
\n" ); document.write( " $\"b=3p=3%2A4=highlight%2812%29\"$ . One book costs 12 dollars. \n" ); document.write( "

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