To find the cost per serving, we can calculate the cost based on the information given.
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For the 3 servings:
- Total cost = $18
- Number of servings = 3
- Cost per serving = Total cost / Number of servings = $18 / 3 = $6 per serving
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For the 10 servings:
- Total cost = $60
- Number of servings = 10
- Cost per serving = Total cost / Number of servings = $60 / 10 = $6 per serving
In both cases, the cost per serving is $6.