SOLUTION: nat wants to combine two types of nuts to make a mixture that costs $1.64 per pound. how many pounds of nuts that cost $1.40 per pound should be mixed with 3 pounds of nuts that c

Question 48663: nat wants to combine two types of nuts to make a mixture that costs $1.64 per pound. how many pounds of nuts that cost $1.40 per pound should be mixed with 3 pounds of nuts that cost $2.20 per pound to obtain the desired mixture.

i tried 1.40x + 3(2.20) = $1.64 but this doesn't work. the answer is 7 pounds but i don't understand how to get the formula.
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
2.20*3+1.40X=1.64(3+X) OR 6.60+1.40X=4.92+1.64X OR 1.68=.24X OR X=1.68/.24 OR X=7 POUNDS OF $1.40 NUTS
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