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Mathematics, 17.06.2021 14:00 thutch1950oww9q0
The mean temperature of 10 cups of coffee is 89.6°C. The mean temperature of a different 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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The mean temperature of 10 cups of coffee is 89.6°C. The mean temperature of a different collection...
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