Question

an AC cools the room by bringing down temperature by 4 degree Celsius per hour how much time it will take to bring down room temperature from 48 degree Celsius to 24 degree celsius

Answer 1

Decreasing rate of temperature per hour=4° C
Current room temperature=48° C
Required room temperature=24° C

Therefore,to lower temperature from 48° C to 24 C°,we must subtract 24 from it.
Now,to know how much time AC will require to reduce temperature, we must divide 24 by speed of AC i.e. 4° C per hour.

24/4=6

Thus AC will require 6 hours to cool temperature from 48° C to 24° C

(This is my first answer on brainly,so I am sorry for any mistakes which I did unintentionally.)