To find out how many truffles can be made, we first need to find the total weight of the chocolate melted.
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Calculate the total weight of chocolate: \[ \text{Total weight} = 5.4 , \text{ounces} + 6.1 , \text{ounces} + 5.7 , \text{ounces} \] \[ = 5.4 + 6.1 + 5.7 = 17.2 , \text{ounces} \]
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Determine how many truffles can be made: Each truffle requires 0.4 ounces of chocolate. To find the number of truffles, we divide the total weight of chocolate by the weight needed for one truffle: \[ \text{Number of truffles} = \frac{17.2 , \text{ounces}}{0.4 , \text{ounces/truffle}} \] \[ = 43 \]
Therefore, the chocolate maker can make 43 truffles.
The correct answer is 43.