Question

A certain freezing process requires that room temperature be lowered from 40°c at the rate of 4°c every hour. What will be the room temperature 12 hours after the process begins?

Answer 1

Intial temperature=40°

Rate of change in temperature=5°C/hours

time=10hours

so in ten hours temperature would be decrease by 10*5=50°C

so final temperature=50-40 =10°C