Question

10. An AC.cools the room at the rate of 5°C per hour. What would be the final temperature
of the room after 6 hours, if the initial temperature of the room is 40°C?​

Answer 1

Answer:

The answer should be 10°C

Step-by-step explanation:

The rate of cooling is 5°C / hr

Therefore,

Temperature reduced after 6 hrs = 5× 6 = 30°

Thus,

Temperature after 6 hrs = 40°C - 30°C

= 10°C

Answer 2

Answer:65°C

Step-by-step explanations:

Initial temperature=40°C

Temperature raises by 5°C per hour

Hence this is a arithmetic progression with a=40 and common difference ,d=5

Hence by the formula

X=a+(n-1)d

=40+(6-1)5

=40+(5)5

=40+25

=65