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 temperature of the room after 10 hours will be -15⁰c.

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Answer 2

Step-by-step explanation:

according to your question

the temperature of the room is given = 40° C

the given time is = 10 hours

the cooling process is taken process with the speed of -5°c every hour. (here -5° indicates the cooling of the room)

therefore,

1 hour 5 degree cooling

then in 10 hours the total cooling will take place will be

$5 \: degree \:per \: hour \times 10 \: hours = - 50 \: degree \: of \: cooling$

this means the temperature of room after 10 hours will be

$40 - 50 = - 10$

therefore the temperature of room after 10 hours will be -10° C