A granola recipe uses 750 grams of oats for 15 servings. How many servings can be made with 450 grams of oats when every ingredient is reduced by the same factor?

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Each serving uses 750 divided by 15, or 50 grams of oats, so 450 grams makes 9 servings. Choosing 10 servings treats 450 as roughly two-thirds of 750 without applying the exact factor of 0.6.