document.write( "Question 1088702: The cost of a pen is 30 cents more than the cost of a pencil. Jackson spent $4.30 when he bought five pens and two pencils. Can you calculate the individual cost of a pencil and pen? \n" ); document.write( "

Algebra.Com's Answer #703006 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "pen = pencil + 30,   (1)\r\n" );
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document.write( "5 pens + 2 pencil = 430   (cents)\r\n" );
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document.write( "5*(pencil+30) + 2 pencil = 430,\r\n" );
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document.write( "5*pencil + 150 + 2 pencil = 430,\r\n" );
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document.write( "7 pencil = 430 - 150,\r\n" );
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document.write( "7 pencil = 280   ====>  pencil =  = 40 cents.\r\n" );
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document.write( "Answer. Pencil costs 40 cents.  Pen costs 40 + 30 = 70 cents.\r\n" );
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