Final answer:
To ensure no change in profit, the manager should mix 320 pounds of cashews with the peanuts.
Step-by-step explanation:
To ensure no change in profit, the manager needs to determine the cost price per pound of peanuts. Since the mixture is being sold for $2.00 per pound, the cost price per pound of peanuts can be calculated by subtracting the selling price per pound of cashews from the selling price of the mixture:
Cost price per pound of peanuts = Selling price per pound of mixture - Selling price per pound of cashews = $2.00 - $1.50 = $0.50
Therefore, the cost price per pound of peanuts is $0.50. To find out the amount of cashews needed to be mixed with the peanuts, we can set up a ratio using the cost price of peanuts and cashews:
Cashews : Peanuts = $4.00 : $0.50 = 8 : 1
Since we want to mix 40 pounds of peanuts, we can calculate the amount of cashews needed:
Amount of cashews = 40 pounds of peanuts Ă— (8/1) = 320 pounds
Therefore, the manager should mix 320 pounds of cashews with the peanuts to ensure no change in profit.