document.write( "Question 1013544: A Chemist has 100g of 25% acid solution. How much of these solution he needs to drain and replaced with 70% acid solution to obtain 100g of 60% acid solution \n" ); document.write( "
Algebra.Com's Answer #854448 by ikleyn(53834)\"\" \"About 
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\n" ); document.write( "A Chemist has 100g of 25% acid solution. How much of these solution he needs to drain and replace
\n" ); document.write( "with 70% acid solution to obtain 100g of 60% acid solution
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\n" ); document.write( "\n" ); document.write( "        Calculations in the post by @lwsshak3 are incorrect and lead to wrong answer.\r
\n" ); document.write( "\n" ); document.write( "        I came to bring a correct solution.\r
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\n" ); document.write( "\n" ); document.write( "Let x = the amount of 25% solution to drain and replace with 70% solution (in grams).
\n" ); document.write( "The balance equation for the acid is
\n" ); document.write( "0.25*(100-x) + 0.7x = 0.6*100
\n" ); document.write( "25 - 0.25x + 0.70x = 60
\n" ); document.write( "0.45x = 35
\n" ); document.write( "x = 35/0.45 = 77 \"7%2F9\" grams,   or   77.7778 grams, approximately.         ANSWER\r
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\n" ); document.write( "\n" ); document.write( "Solved correctly to teach you in a right way.\r
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