document.write( "Question 614477: you have mixed equal parts of a 20% and 5% benzocaine ointment. what is the resultig concentration? \n" ); document.write( "
Algebra.Com's Answer #386561 by Alan3354(69443)\"\" \"About 
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you have mixed equal parts of a 20% and 5% benzocaine ointment. what is the resultig concentration?
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\n" ); document.write( "The average, (20+5)/2
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