Question

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?​

Answer 1

Step-by-step explanation:

The present room temperature = 40\degree C40°C

The room temperature decreasing every hour by rate of = 5\degree C5°C

The room temperature after 10 hours will be

= 40\degree C\ +\ 10\times\left(-5\degree C\right)40°C + 10×(−5°C)

= 40\degree C-50\degree C\40°C−50°C 

= -10\degree C−10°C

so, the room temperature after 10 hour = -10\degree C−10°C

Answer 2

Answer:

The correct answer is 50°C.

Step-by-step explanation:

If a rate is 5°C so after ten hours the temperature is simple 5×10.

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