a recipe calls for 1/2 teaspoon of crushed red pepper and 3/4 teaspoon of thyme leaves. What is the unit rate of crushed pepper to 1 teaspoon of thyme leaves?

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The unit rate of crushed red pepper to 1 teaspoon of thyme leaves is 2:3, since 1/2 teaspoon of crushed red pepper is equal to 2/3 teaspoon of thyme leaves.