document.write( "Question 519475: How many quarts of water must be added to 15 qt of an 80% antifreeze solution to make a 75% antifreeze solution?
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Algebra.Com's Answer #345627 by mananth(16946)\"\" \"About 
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--------percent ---------------- quantity
\n" ); document.write( "Antifreeze I 80 ---------------- 15 quarts
\n" ); document.write( "water 0 ---------------- x quarts
\n" ); document.write( "Mixture 75 ---------------- 15 + x quarts
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\n" ); document.write( "80*15+0 x= 75(15+x )
\n" ); document.write( "1200+0 x=1125 + 75 x
\n" ); document.write( " -75 x = 1125 - -1200
\n" ); document.write( "-75 x = -75
\n" ); document.write( "/ -75
\n" ); document.write( "x = 1
\n" ); document.write( " 1 quart of water
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