Question

A certain freezing process requires the room temperature to be lowered from 40°C to 5°C per hour. What will be the room temperature 12 hours after the process begins? ​

Answer 1

Answer:

So, in 10 hours the temperature would be decreased by 10*5 = 50°C.

Step-by-step explanation:

Let us assume that the lowered temperature as negative,

Initial temperature = 40oC

Change in temperature per hour = -5oC

Change in temperature after 10 hours = (-5) × 10 = -50oC

∴The final room temperature after 10 hours of freezing process = 40oC + (-50oC)

= -10oC

The room temperature 10 hours after the process begins= -10oC

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Answer 2

Answer:

hlo ... ..................