document.write( "Question 451040: Theresa Yee, a chemist, has a 25% hydrochloric acid solution and a 50% hydrochloric acid solution. How many liters of each should she mix to get 10 liters of a hydrochloric acid solution with a 40% acid concentration? \n" ); document.write( "
Algebra.Com's Answer #310156 by rwm(914)\"\" \"About 
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a+b=10
\n" ); document.write( ".25a+.5b=10*.4
\n" ); document.write( ".25a+.5b=4
\n" ); document.write( "a=4 b=6
\n" ); document.write( "check
\n" ); document.write( "1 +3=4
\n" ); document.write( "ok
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