document.write( "Question 1156894: Mr. Costa is filling planter boxes with soil. He has soil that is 23% sand, and he buys 6 pounds of a commercial potting soil that is 39% sand. He mixes some of his soil with the 6 pounds of commercial potting soil. The resulting soil mixture is 35% sand. How many pounds of his soil did Mr. Costa use?
\n" ); document.write( "[A] 4 lb [B] 2 lb [C] 6 lb [D] 8 lb \n" ); document.write( "
Algebra.Com's Answer #779713 by josgarithmetic(39617)\"\" \"About 
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document.write( "MATERIALS             CONCENTRATION SAND%        QUANT.\r\n" );
document.write( "He Has                               23            v\r\n" );
document.write( "Commercial Potting                   39            6\r\n" );
document.write( "Mixture wanted                       35           v+6\r\n" );
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\n" ); document.write( "The description is itself in only one variable.\r
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\n" ); document.write( "\n" ); document.write( "\"23v%2B39%2A6=35%28v%2B6%29\"\r
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