document.write( "Question 136378: a merchant mix peanuts that sells for $3/pound and cashews that sells for $6/pound to get 48 lbs of mixed nuts that sells for $4/pound. How many pounds of each should the merchant use.\r
\n" ); document.write( "\n" ); document.write( "i know this is a system of equations> here is how i proceeded with the problem\r
\n" ); document.write( "\n" ); document.write( "x + y = 48\r
\n" ); document.write( "\n" ); document.write( "3x+6y= 48, now i am stuck. i am not sure if i even did it right
\n" ); document.write( "

Algebra.Com's Answer #99899 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
With these type of problems, you have to be able to explain
\n" ); document.write( "the reason for the formula, or chances are, you won't get
\n" ); document.write( "it right. I like to write the formulas out in words to see
\n" ); document.write( "if it makes sense. For this problem:
\n" ); document.write( "[(price/lb of peanuts)x(lbs of peanuts)
\n" ); document.write( "+ (price/lb of cashews)x(lbs of cashews)] / (48 lbs of mixture) = $4/lb
\n" ); document.write( "This makes sense to me, because it's
\n" ); document.write( "($ + $)/ lbs = $/lb
\n" ); document.write( "Let \"p\" = pounds of peanuts in mixture
\n" ); document.write( "Let \"c\" = pounds of cashews in mixture
\n" ); document.write( "\"%283p+%2B+6c%29+%2F+48+=+4\"
\n" ); document.write( "and
\n" ); document.write( "\"p+%2B+c+=+48\"
\n" ); document.write( "\"p+=+48+-+c\"
\n" ); document.write( "Substitute this in the 1st equation
\n" ); document.write( "\"%283%2848-c%29+%2B+6c%29+%2F+48+=+4\"
\n" ); document.write( "\"%28144+-+3c+%2B+6c%29+%2F+48+=+4\"
\n" ); document.write( "\"144+%2B+3c+=+4%2A48\"
\n" ); document.write( "\"3c+=+192+-+144\"
\n" ); document.write( "\"3c+=+48\"
\n" ); document.write( "\"c+=+16\"
\n" ); document.write( "and
\n" ); document.write( "\"p+=+48+-+c\"
\n" ); document.write( "\"p+=+48+-+16\"
\n" ); document.write( "\"p+=+32\"
\n" ); document.write( "The merchant needs 16 pounds of casews and 32 pounds of peanuts
\n" ); document.write( "check answer:
\n" ); document.write( "\"%283p+%2B+6c%29+%2F+48+=+4\"
\n" ); document.write( "\"%283%2A32+%2B+6%2A16%29+%2F+48+=+4\"
\n" ); document.write( "\"%2896+%2B+96%29%2F48+=+4\"
\n" ); document.write( "\"192%2F48+=+4\"
\n" ); document.write( "\"4+=+4\"
\n" ); document.write( "OK
\n" ); document.write( "Remember, you must understand the formula you are using, or one little
\n" ); document.write( "change in the wording of the problem will throw you off
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