Question

11. A certain freezing process requires that room temperature to be lowered from 60°C at the rate of 8°C
every hour. What will be the room temperature 8 hours after the process begins?​

Answer 1

Step-by-step explanation:

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$solution : \\ \\ the \: present \: room \: \\ \\ temperature = 60 \: celcius \\ \\ the \: room \: temperature \: \\ \\ decreasing \: every \: hour \: \\ \\ by \: rate \: of \: = 8 \: celcius \\ \\ the \: room \: temperature \: \\ \\ after \: 8 \: hours \: will \: be \: \\ \\ \implies \: 60 + 8 \times ( - 8 \: celcius) \\ \\ \implies \: 60 - 64 \: celcius \: \\ \\ \implies \: - 4 \: degree \: celcius \: \\ \\ so \: the \: room \: temperature \: \\ \\ after \: 8 \: hours \: \\ \\ = - 4 \: degree \: celcius \:$

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