The mean temperature of 10 cups of coffee is 89.6°C. Th e mean temperature of a diff erent collection of 20 cups of
coffee is 92.1°C. What is the mean temperature of all 30 cups of coffee?
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95.7*c this is you answer hope its help you
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The mean temperature of 10 cups of coffee is 89.6°C. Th e mean temperature of a diff erent collection of 20 cups of
coffee is 92.1°C. What is the mean temperature of all 30 cups of coffee?
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