Question

The temperature of a room at 12 noon is 12°C above zero. The room temperature decreases at the rate of
2°C per hour. At what time would the temperature be 8°C below zero?​

Answer 1

Answer:

it decreases at the rate of 2°C per hour until midnight, at what time would the temperature be 8°C below zero? What would be the temperature at mid-night? Thus, at 9 pm temperature would be 8°C below zero. Therefore, the temperature at mid night will be 14°C below 0.