document.write( "Question 125653: How many liters of a 60% acid solution must be mixed with a 75% acid solution to get 20 liters of 72% solution? \n" ); document.write( "
Algebra.Com's Answer #92144 by checkley71(8403)\"\" \"About 
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.75x+.60(20-x)=.72*20
\n" ); document.write( ".75x+12-.60x=14.4
\n" ); document.write( ".15x=14.4-12
\n" ); document.write( ".15x=2.4
\n" ); document.write( "x=2.4/.15
\n" ); document.write( "x=16 liters of 75 % soluton is used.
\n" ); document.write( "20-16=4 liters of 60% solution is used.
\n" ); document.write( "proof
\n" ); document.write( ".75*16+.6*4=14.4
\n" ); document.write( "12+2.4=14.4
\n" ); document.write( "14.4=14.4
\n" ); document.write( "
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