document.write( "Question 808557: Um.... hello ^_^ I was absent by the day this was taught.....and no one can help me T_T.... will you??? :)\r
\n" ); document.write( "\n" ); document.write( "How many quarts of pure acid must be added to 5 quarts of a 30% acid solution to produce a 50% acid solution ?
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Algebra.Com's Answer #487098 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
--- percent ---------------- Amount
\n" ); document.write( "acid I 30 ---------------- 5 quarts
\n" ); document.write( "Pure acid 100 ---------------- x quarts
\n" ); document.write( "Mixture 50 ---------------- 5 + x quarts
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\n" ); document.write( "30 * 5 + 100 x = 50 ( 5 + x )
\n" ); document.write( "150 + 100 x = 250 + 50 x
\n" ); document.write( "100 x -50 x = -150 + 250
\n" ); document.write( "50 x = 100
\n" ); document.write( "/ 50
\n" ); document.write( "x = 2 quarts Pure acid
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\n" ); document.write( "m.ananth@hotmail.ca
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