SOLUTION: how many pounds of peanuts costing $2.00 a pound should be mixed with 4 pounds of cashews costing $4.50 a pound to obtain a mixture costing $3.00 a pound?

SOLUTION: how many pounds of peanuts costing $2.00 a pound should be mixed with 4 pounds of cashews costing $4.50 a pound to obtain a mixture costing $3.00 a pound?

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Question 439760: how many pounds of peanuts costing $2.00 a pound should be mixed with 4 pounds of cashews costing $4.50 a pound to obtain a mixture costing $3.00 a pound?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
let p = pounds of peanuts.
(2p+4.5*4)/(p+4) = 3
(2p+18)/(p+4) = 3
2p+18=3p+12
-p=-6
p=6 lbs.

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