document.write( "Question 917346: how many liters of pure water must be combined with an 18-liter mixture that is
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document.write( "24% acid in order to obtain a mixture that is 15% acid? Your answer may be a
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document.write( "decimal number, but it must be exact.\r
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document.write( "Answer: ________________________________ \n" );
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Algebra.Com's Answer #556628 by mananth(16946)![]() ![]() You can put this solution on YOUR website! --- percent ---------------- Amount \n" ); document.write( "acid 24 ---------------- 18 liters \n" ); document.write( "water 0 ---------------- x liters \n" ); document.write( "Mixture 15 ---------------- 18 + x liters \n" ); document.write( " \n" ); document.write( "24 * 18 + 0 x = 15 ( 18 + x ) \n" ); document.write( "432 + 0 x = 270 + 15 x \n" ); document.write( "0 x -15 x = -432 + 270 \n" ); document.write( "-15 x = -162 \n" ); document.write( "/ -15 \n" ); document.write( "x = 10.8 liters water \n" ); document.write( " \n" ); document.write( " |