Suppose you are cooling a hot extract in a 24°C process room. The temperature of the extract right when the heater was turned off is 105°C. After 20 minutes, its temperature is 77°C. What will be the temperature of the extract in 30 minutes? 66.9 deg. C 59.6 deg. C 64.6 deg. C O 56.4 deg. C

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