document.write( "Question 467170: problem #1
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document.write( "How many kilograms of each of a 50% silver alloy and 10% silver alloy must be mixed to obtain 24 kilograms of a 25% silver alloy?
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document.write( "problem #2
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document.write( "Two vats contain cream, one sample tested 8% butterfat and the other tested 16% butterfat. How much cream should be taken from each to produce a 5 liters mixture which will test 12% butterfat?
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document.write( "problem #3
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document.write( "How many kilograms each of a powdered detergent and a rinsing solution containing 80% of the pure rinsing solution must be mixed to make 140 kilograms of a 24% detergent?
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document.write( "I'll be waiting for the answer and solution \n" );
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Algebra.Com's Answer #320447 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! problem #1 \n" ); document.write( "How many kilograms of each of a 50% silver alloy and 10% silver alloy must be mixed to obtain 24 kilograms of a 25% silver alloy? \n" ); document.write( "problem #2 \n" ); document.write( "Two vats contain cream, one sample tested 8% butterfat and the other tested 16% butterfat. How much cream should be taken from each to produce a 5 liters mixture which will test 12% butterfat? \n" ); document.write( "problem #3 \n" ); document.write( "How many kilograms each of a powdered detergent and a rinsing solution containing 80% of the pure rinsing solution must be mixed to make 140 kilograms of a 24% detergent? \n" ); document.write( "... \n" ); document.write( "problem #1 \n" ); document.write( "let x=kilograms of 50% silver alloy to be mixed \n" ); document.write( "24-x=kilograms of 10% silver alloy to be mixed \n" ); document.write( "50%x+10%(24-x)=25%(24) \n" ); document.write( ".5x+2.4-.1x=6 \n" ); document.write( ".4x=3.6 \n" ); document.write( "x=9 \n" ); document.write( "24-x=24-9=15 \n" ); document.write( "ans: \n" ); document.write( "9 kilograms of 50% silver must be mixed with 15 kilograms of 10% silver to obtain 24 kilograms of a 25% silver alloy? \n" ); document.write( ".. \n" ); document.write( "problem #2 \n" ); document.write( "let x=liters of 8% butterfat cream \n" ); document.write( "5-x=liters of 16% butterfat cream \n" ); document.write( "8%x+16%(5-x)=12%(5) \n" ); document.write( ".08x+.8-.16x=.6 \n" ); document.write( "multiply by 100 \n" ); document.write( "8x+80-16x=60 \n" ); document.write( "-8x=-20 \n" ); document.write( "x=20/8=2.5 \n" ); document.write( "5-x=5-2.5=2.5 \n" ); document.write( "ans: \n" ); document.write( "2.5 liters of 8% butterfat cream and 2.5 liters of 12% butterfat cream should be taken to produce a 5 liters mixture which will test 12% butterfat \n" ); document.write( ".. \n" ); document.write( "problem #3 \n" ); document.write( "sorry, I don't understand this problem \n" ); document.write( " |