Question

A certain freezing process requires that the room temperature be lowered from 4C
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:

Given that

Let us assume that the lowered temperature as negative,

Initial temperature = 40°C

Change in temperature per hour = -5°C

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

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

= -10°C

The room temperature 10 hours after the process begins= -10°C

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Answer 2

Answer:

-10°c

Step-by-step explanation:

Room temperature be lowered = 40°c

At the rate of = 5°c

(-5) × 10 = -50°c.

10 hours of freezing process=

40°c+(-50°c)= -10°c

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