To find the number of calories per serving from the recipe, we need to calculate the total calories in the yogurt used and then divide that by the number of servings.
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First, determine the total calories from the yogurt:
- If each container of yogurt has 150 calories and the recipe calls for 1/3 of a container, you would calculate: \[ \text{Calories from yogurt} = \frac{1}{3} \times 150 \]
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Then, since the recipe makes 4 servings, you would divide the total calories from the yogurt by the number of servings: \[ \text{Calories per serving} = \left(\frac{1}{3} \times 150\right) \div 4 \]
Based on this logic, the correct set of calculations is: \[ \frac{1}{3} \times 150 \div 4 \]
Thus, the correct response is: 1/3×150÷4.