document.write( "Question 915407: Macadamia nuts cost $16.50 per pound, but research by an independent firm says that mixed nuts sell better if macadamias are included. The standard mix costs $9.25 per pound. Find how many pounds of macadamias and how many pounds of the standard mix should be combined to produce 40 pounds that will costs $10 per pound. Find the amounts to the nearest tenth of a pound.\r
\n" ); document.write( "\n" ); document.write( "This is soo confusing.
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Algebra.Com's Answer #555626 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
There is just lots of words -some of them not needed
\n" ); document.write( "Let \"+a+\" = pounds of macadamias needed
\n" ); document.write( "Let \"+b+\" = pounds of standard mix needed
\n" ); document.write( "------------------
\n" ); document.write( "(1) \"+a+%2B+b+=+40+\"
\n" ); document.write( "(2) \"+%28+16.5a+%2B+9.25b+%29+%2F+40+=+10+\"
\n" ); document.write( "----------------------------------
\n" ); document.write( "(2) \"+16.5a+%2B+9.25b+=+400+\"
\n" ); document.write( "(2) \"+1650a+%2B+925b+=+40000+\"
\n" ); document.write( "(2) \"+66a+%2B+37b+=+1600+\"
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\n" ); document.write( "Multiply both sides of (1) by \"+37+\"
\n" ); document.write( "and subtract (1) from (2)
\n" ); document.write( "(2) \"+66a+%2B+37b+=+1600+\"
\n" ); document.write( "(1) \"+-37a+-+37b+=+-1480+\"
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\n" ); document.write( "\"+29a+=+120+\"
\n" ); document.write( "\"+a+=+4.138+\"
\n" ); document.write( "and, since
\n" ); document.write( "(1) \"+a+%2B+b+=+40+\"
\n" ); document.write( "(1) \"+b+=+35.862+\"
\n" ); document.write( "-------------------
\n" ); document.write( "4.1 pounds of macadamias are needed
\n" ); document.write( "35.9 pounds of standard mix are needed
\n" ); document.write( "-------------------
\n" ); document.write( "check answer:
\n" ); document.write( "(2) \"+%28+16.5a+%2B+9.25b+%29+%2F+40+=+10+\"
\n" ); document.write( "(2) \"+%28+16.5%2A4.1+%2B+9.25%2A35.9+%29+%2F+40+=+10+\"
\n" ); document.write( "(2) \"+%28+67.65+%2B+332.08+%29+%2F+40+=+10+\"
\n" ); document.write( "(2) \"+399.73+=+400+\"
\n" ); document.write( "Error due to rounding off -I think
\n" ); document.write( "Hope this helps\r
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