Question

An air conditioner cools the room at the rate of 3°C per hour. If the initial temperature
of the room was 32°C, find the number of hours it takes to bring down the room
temperature to -4°C.​

Answer 1

Answer:

It will take 12 hours to cool down the room to -4 degree centigrade.

Step-by-step explanation:

Multiplying 12 with -3 we get -36.

Subtracting -36 from 32 we get -4 degree centigrade.