# A certain freezing process requires that room temperature be lowered from 40 degree Celsius at rate of 5 degree Celsius every hour what will be the room temperature 10 hours after the process begins?

The rate of change is the change in quantity with respect to time.

## Answer: The final temperature of the room will be -10 degrees Celcius.

Go through the steps to understand the explanation.

**Explanation:**

The initial temperature of the room = 40 degrees Celcius

Rate of decrease in temperature = 5-degree Celcius per hour

Time after which temperature is recorded = 10hours

The final temperature of the room = Initial temperature - rate × time

Final temperature = 40 - 5 × 10

Final temperature = -10 degree Celcius.