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Mathematics 12 Online
OpenStudy (anonymous):

Another cup of coffee is initially at 70 degrees. The room temperature is 30 degrees. Its temperature falls at a rate (in degrees per minute) of 1.0 times the temperature difference between the coffee and the room. (a) What will be the temperature of the coffee after 15 minutes? (b) How long will it take for the temperature of the coffee to fall to 25 degrees?

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