document.write( "Question 604181: Joe mixes 10 ounces of metal that contains 30% gold with 20 ounces of a metal that contains 15% gold. What is the percent of gold in the resulting metal?
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document.write( "F. 30%
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document.write( "G. 22.5%
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document.write( "H. 20%
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document.write( "J. 15% \n" );
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Algebra.Com's Answer #380983 by alicealc(293)![]() ![]() ![]() You can put this solution on YOUR website! 10 * 30% + 20 * 15% = (10+20) * x% \n" ); document.write( "(omit the % sign for all) \n" ); document.write( "300 + 300 = 30x \n" ); document.write( "600 = 30x \n" ); document.write( "x = 600/30 = 20\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so the resulting metal will contain 20% of gold \n" ); document.write( " |