Question

5. The temperature at 12 noon was 25°C
above zero. If it decreases at the rate of 5°C
per hour until midnight, at what time would
the temperature be 12°C below zero? What
would be the temperature at midnight?​

Answer 1

Hi mate

Here is your answer

Thus, the temperature is 8°C below zero at 9:00 pm. Thus, the temperature at midnight is 14∘C below zero. It decreases at 2° per hour. Change in temperature = 10 - ( -8 ) = 18°C.

Hope it helps