If the AC cools the room by 4 degrees Celsius per hour, we can calculate the time it would take to bring down the room's temperature from 48 degrees Celsius to 24 degrees Celsius.
The temperature difference between the starting temperature (48 degrees Celsius) and the target temperature (24 degrees Celsius) is 48 - 24 = 24 degrees Celsius.
Since the AC cools the room by 4 degrees Celsius per hour, the time it would take to bring down the temperature by 24 degrees Celsius can be calculated by dividing the temperature difference by the cooling rate:
Time = Temperature difference / Cooling rate Time = 24 degrees Celsius / 4 degrees Celsius per hour Time = 6 hours
Therefore, it would take approximately 6 hours for the AC to bring down the room's temperature from 48 degrees Celsius to 24 degrees Celsius.