The temperature at 12 noon was 10 degree Celsius above zero. If it decreases at the rate of 2 degree Celsius per hour, at what time would the temperature be 8 degree Celsius below zero? What would be the temperature at mid night?
The temperature recorded at 12 noon was 15 degrees celsius above 0. it decreases at the rate of 3 degree Celsius per hour until midnight ,at what time would the temperature be 9 degree Celsius below zero. What t would be the temperature at midnight?