document.write( "Question 599398: 18 kg of bronze was made by combinding 12 kg of copper which costs $4/kg with 6kg of tin which costs $10/kg. Find the cost per kg of the mixture.\r
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Algebra.Com's Answer #378976 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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18 kg of bronze was made by combining 12 kg of copper which costs $4/kg with 6kg of tin which costs $10/kg.
\n" ); document.write( " Find the cost per kg of the mixture.
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\n" ); document.write( "Let c = cost of the mixture
\n" ); document.write( "18c = 4(12) + 10(6)
\n" ); document.write( "18c = 48 + 60
\n" ); document.write( "c = 108/18
\n" ); document.write( "c = $6 a kg \n" ); document.write( "

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