document.write( "Question 1056038: An order is written for 15 grams of a 5% lidocaine topical cream. Only 3% concentration and 6% concentration are available. How much of the 3% concentration must be added to the 6% concentration to fill this order? \n" ); document.write( "
Algebra.Com's Answer #671204 by Alan3354(69443)\"\" \"About 
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An order is written for 15 grams of a 5% lidocaine topical cream. Only 3% concentration and 6% concentration are available. How much of the 3% concentration must be added to the 6% concentration to fill this order?
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\n" ); document.write( "t = amount of 3%
\n" ); document.write( "s = amount of 6%
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\n" ); document.write( "t + s = 15
\n" ); document.write( "3t + 6s = 15*5
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