n apple pie with an initial temperature of 170-c is removed from the oven and left to cool in a room with an air temperature of 20 c. given that the temperature of the pie initially decreases at a...

n apple pie with an initial temperature of 170-c is removed from the oven and left to cool in a room with an air temperature of 20 c. given that the temperature of the pie initially decreases at a rate of 3.0-c/min, how long will it take for the pie to cool to a temperature of 30°c?