document.write( "Question 764301: I have an 8oz solution which is 10% permitherin. How much water will I need to add to this solution to make this solution be .5% permitherin?
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document.write( "Or would it be better to mix as a ratio of water to permitherin? \n" );
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Algebra.Com's Answer #465340 by stanbon(75887) ![]() You can put this solution on YOUR website! I have an 8oz solution which is 10% permitherin. How much water will I need to add to this solution to make this solution be 0.5% permitherin? \n" ); document.write( "----- \n" ); document.write( "Adding water will lower the percentage of permitherin. \n" ); document.write( "-------- \n" ); document.write( "Equation: \n" ); document.write( "water + water = water \n" ); document.write( "0.90*8 + 1.0x = 0.995(8+x) \n" ); document.write( "------ \n" ); document.write( "Multiply thru by 1000 to get: \n" ); document.write( "900*8 + 1000x = 995*8 + 995x \n" ); document.write( "------- \n" ); document.write( "5x = 95*8 \n" ); document.write( "x = 19*8 \n" ); document.write( "x = 152 oz (amt. of water to add) \n" ); document.write( "=============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=============== \n" ); document.write( " \n" ); document.write( " |