document.write( "Question 587391: How many gallons of a 10% acid solution and a 30% acid solution need to be mixed to make 20 gallons of a 22% acid solution? \n" ); document.write( "
Algebra.Com's Answer #374114 by richwmiller(17219)\"\" \"About 
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x+y=20
\n" ); document.write( ".1x+.3y=.22*20
\n" ); document.write( "x=8 y=12
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