9. At 2:00 PM a thermometer reading 80°F is taken outside where the air temperature is 20°F. At 2:03 PM, the temperature reading is 42°F. Later, the thermometer is brought inside where the air is at 80°F. At 2:10 PM, the reading is 7PF. When was the thermometer brought indoors? (Ans: 205 PM)

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