To calculate the total cost of Troy's order, we can multiply the weight of each item by its price per pound and then sum the totals.
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Cost of ham: \[ 6 \text{ pounds} \times 3.15 \text{ dollars/pound} = 18.90 \text{ dollars} \]
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Cost of cheese: \[ 12 \text{ pounds} \times 1.85 \text{ dollars/pound} = 22.20 \text{ dollars} \]
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Cost of turkey: \[ 14 \text{ pounds} \times 3.40 \text{ dollars/pound} = 47.60 \text{ dollars} \]
Now, we add the costs together: \[ 18.90 + 22.20 + 47.60 = 88.70 \text{ dollars} \]
Thus, the total cost of Troy's order is $88.70.