document.write( "Question 765002: Please help me solve this word problem as I don't understand how to solve mixture problems.\r
\n" ); document.write( "\n" ); document.write( "What quantity of 70 per cent acid solution must be mixed with a 25 solution to produce 972 mL of a 50 per cent solution?
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Algebra.Com's Answer #465887 by rothauserc(4718)\"\" \"About 
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First multiply 972 * .50 = 486 ml of acid because it is a 50% solution. Now,
\n" ); document.write( ".70x + .25x = 486
\n" ); document.write( ".95x = 486
\n" ); document.write( "x = 486 / .95 = 511.58 and
\n" ); document.write( ".70 * 511.58 = 358.11 mL of the 70% solution
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