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
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document.write( "i know this is a system of equations> here is how i proceeded with the problem\r
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document.write( "x + y = 48\r
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document.write( "3x+6y= 48, now i am stuck. i am not sure if i even did it right \n" );
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Algebra.Com's Answer #99899 by josmiceli(19441)![]() ![]() 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 \n" ); document.write( "Let \n" ); document.write( " \n" ); document.write( "and \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Substitute this in the 1st equation \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "and \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "The merchant needs 16 pounds of casews and 32 pounds of peanuts \n" ); document.write( "check answer: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \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 \n" ); document.write( " |