document.write( "Question 242727: Babbitt metal is an alloy made up of 90% tin, 7% antimony, 3% copper. How many pounds of pure copper must be added to 150 pounds of the alloy so that it will contain 17% copper? \n" ); document.write( "
Algebra.Com's Answer #177724 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The amount of pure copper in 150 lbs. of Babbitt is:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " lbs.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The amount of pure copper in lbs. of pure copper is lbs.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The sum of the two quantities above is the amount of pure copper in the 17% alloy which can be represented by:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So we can say:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Just solve for \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "John
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" );