document.write( "Question 803630: How many kilograms of nickel silver containing 15% zinc and how many kilograms of nickel silver containing 30% zinc must be melted together to produce 704 kg of a new nickel silver containing 20% zinc?\r
\n" ); document.write( "\n" ); document.write( "Treat the percents given in this exercise as exact numbers, and work to three significant digits. \n" ); document.write( "

Algebra.Com's Answer #484432 by Alan3354(69443) $\"\"$ $\"About$

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How many kilograms of nickel silver containing 15% zinc and how many kilograms of nickel silver containing 30% zinc must be melted together to produce 704 kg of a new nickel silver containing 20% zinc?
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\n" ); document.write( "\n" ); document.write( "Do it like this one. Only the numbers are different.
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\n" ); document.write( "Amanda wants to make 8 gal. of a 20% saline solution by mixing together a 56% saline solution and a 8% saline solution. How much of each solution must she use?
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\n" ); document.write( "e = amount of 8%
\n" ); document.write( "f = amount of 56%
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\n" ); document.write( "e+ f = 8 (total solution)
\n" ); document.write( "8e + 56f = 20*8 (total saline)
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\n" ); document.write( "e+ f = 8
\n" ); document.write( "e + 7f = 20
\n" ); document.write( "------------ Subtract
\n" ); document.write( "-6f = -12
\n" ); document.write( "f = 2
\n" ); document.write( "e = 6 \n" ); document.write( "

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