document.write( "Question 404761: A pound of tin is worth $2 more than a pound of copper. Seven pounds of tin are mixed with 3 pounds of copper to make bronze that sells for $4.45 per pound. How much is a pound of tin worth? \n" ); document.write( "
Algebra.Com's Answer #286078 by ankor@dixie-net.com(22740)\"\" \"About 
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A pound of tin is worth $2 more than a pound of copper.
\n" ); document.write( "Seven pounds of tin are mixed with 3 pounds of copper to make bronze that sells for $4.45 per pound.
\n" ); document.write( " How much is a pound of tin worth?
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\n" ); document.write( "Let t = cost of 1 lb of tin
\n" ); document.write( "then
\n" ); document.write( "(t-2) = cost of 1 lb of copper
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\n" ); document.write( "\n" ); document.write( "7t + 3(t-2) = 4.45(7 + 3)
\n" ); document.write( "7t + 3t - 6 = 4.45(10)
\n" ); document.write( "7t + 3t = 44.5 + 6
\n" ); document.write( "10t = 50.5
\n" ); document.write( "t = \"50.5%2F10\"
\n" ); document.write( "t = $5.05 for a pound of tin
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\n" ); document.write( "Check this
\n" ); document.write( "7(5.05) + 3(3.05) = 4.45(10)
\n" ); document.write( "35.35 + 9.15 = 44.50; confirms our solution of t = 5.05 \n" ); document.write( "
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