document.write( "Question 488179: a pharmascist need 20% boric adic solution.How much 60% boric acid solution must be added to 7.5 liters of an 8% boric acid solution to get the desired strength \n" ); document.write( "
Algebra.Com's Answer #333274 by jorel1380(3719)\"\" \"About 
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.6n+7.5(.08)=.20(n+7.5)
\n" ); document.write( ".6n+.6=.2n+1.5
\n" ); document.write( ".4n=.9
\n" ); document.write( "n=.9/.4=2.25 liters of 60% boric acid solution needed..
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