document.write( "Question 499977: How much pure silver must be alloyed with a 36% silver alloy to obtain 100 gm of a 52% alloy? \n" ); document.write( "

Algebra.Com's Answer #337934 by Alan3354(69443) $\"\"$ $\"About$

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Do mixtures and solutions like this:
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\n" ); document.write( "how many liters of a 70% acid solution must be mixed with a 15% acid solution to get 385L of a 60% acid solution?
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\n" ); document.write( "s = amount of 70%
\n" ); document.write( "f = amount of 15%
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\n" ); document.write( "s + f = 385 (total solution)
\n" ); document.write( "0.7s + 0.15f = 0.6*385 (total acid)
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\n" ); document.write( "f = 385 - s
\n" ); document.write( "Sub for f in 2nd equation
\n" ); document.write( "0.7s + 0.15(385-s) = 231
\n" ); document.write( "70s + 5775 - 15s = 23100
\n" ); document.write( "55s = 17325
\n" ); document.write( "s = 315 liters of 70%
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\n" ); document.write( "f = 70 liters of 15% \n" ); document.write( "

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