document.write( "Question 1152977: How many ounces of pure silver should be added to 180 ounces,75% pure,to obtain a mixture 80% pure? \n" ); document.write( "

Algebra.Com's Answer #775119 by VFBundy(438) $\"\"$ $\"About$

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$\"%280.75%28180%29+%2B+x%29%2F%28180+%2B+x%29+=+0.80\"$
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\n" ); document.write( " $\"%28135+%2B+x%29%2F%28180+%2B+x%29+=+0.80\"$
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\n" ); document.write( " $\"0.80%28180+%2B+x%29+=+135+%2B+x\"$
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\n" ); document.write( " $\"144+%2B+0.80x+=+135+%2B+x\"$
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\n" ); document.write( " $\"9+=+0.20x\"$
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\n" ); document.write( " $\"x+=+45\"$ \n" ); document.write( "

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