document.write( "Question 1154828: A wild bird seed mix is made by combining 100lb of millet seed costing $0.60 per pound with sunflower seeds costing $1.10 per pound. How many pounds of sunflower seeds are needed to make a mixture that costs $0.70 per pound? \n" ); document.write( "
Algebra.Com's Answer #777322 by josmiceli(19441)\"\" \"About 
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Let \"+x+\" = pounds of sunflower seeds needed
\n" ); document.write( "-----------------------
\n" ); document.write( "\"+%28+.6%2A100+%2B+1.1x+%29+%2F+%28+100+%2B+x+%29+=+.7+\"
\n" ); document.write( "\"+60+%2B+1.1x+=+.7%2A%28+100+%2B+x+%29+\"
\n" ); document.write( "\"+60+%2B+1.1x+=+70+%2B+.7x+\"
\n" ); document.write( "\"+.4x+=+10+\"
\n" ); document.write( "\"+x+=+25+\"
\n" ); document.write( "25 pounds of sunflower seeds are needed
\n" ); document.write( "----------------
\n" ); document.write( "check:
\n" ); document.write( "\"+%28+.6%2A100+%2B+1.1x+%29+%2F+%28+100+%2B+x+%29+=+.7+\"
\n" ); document.write( "\"+%28+.6%2A100+%2B+1.1%2A25+%29+%2F+%28+100+%2B+25+%29+=+.7+\"
\n" ); document.write( "\"+%28+60+%2B+27.5+%29+%2F+125+=+.7+\"
\n" ); document.write( "\"+87.5+%2F+125+=+.7+\"
\n" ); document.write( "\"+.7+=+.7+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );