document.write( "Question 778374: how many liters of the 30% acid solution should be added to 40 liters of 10% solution to get a 25% solution? (please state the meaning of any variables you use, set up an algebraic equation, and use it to solve the problem) \n" ); document.write( "
Algebra.Com's Answer #474695 by lwsshak3(11628)\"\" \"About 
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how many liters of the 30% acid solution should be added to 40 liters of 10% solution to get a 25% solution? (please state the meaning of any variables you use, set up an algebraic equation, and use it to solve the problem)
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\n" ); document.write( "let x=amount of the 30% acid solution should be added to 40 liters of 10% solution
\n" ); document.write( "amount of final 25% solution=(40+x)
\n" ); document.write( "sum of acid in the two solutions=amt of acid in final solution
\n" ); document.write( "30%x+10%40=25%(40+x)
\n" ); document.write( ".30x+4=10+.25x
\n" ); document.write( ".05x=6
\n" ); document.write( "x=120
\n" ); document.write( "amount of the 30% acid solution should be added to 40 liters of 10% solution=120 liters
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