# A certain freezing process requires that room temperature be lowered from 40°C at the rate of 5°C every hour. What will be the room temperature 10 hours after the process begins?

A certain freezing process requires that room temperature be lowered from 40°C at

the rate of 5°C every hour. What will be the room temperature 10 hours after the

process begins?

Please tell me the solution

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## Yahya

Let us take the lowered temperature as negative.

Initial temperature = 40 degree Celsius

Change in temperature = -5 degree Celsius

Change in temperature after 10 hours = (-5)*10=-50 degree Celsius

Therefore, the final room temperature after 10 hours of freezing process = 40+(-50) = -10 degree Celsius.