document.write( "Question 1137856: A textbook store sold a combined total of 200
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Algebra.Com's Answer #755727 by ikleyn(52817) $\"\"$ $\"About$

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document.write( "C = P - 76\r\n" );
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document.write( "P + (P-76) = 200\r\n" );
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document.write( "2P = 200 + 76 = 276\r\n" );
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document.write( "P = 276/2 = 138     psychology books sold.  ANSWER\r\n" );
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document.write( "C = 200 - 138 = 62  chemistry book sold.    ANSWER\r\n" );
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document.write( "CHECK.   138 - 62 = 76.    ! Correct !\r\n" );
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