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A certain freezing process requires that...

A certain freezing process requires that room temperature be lowered from `40^(@)C` at a rate of `5^(@)C` at every hour. Find the room temperature 10 hours after the freezing process begins.

A

`-12^(@)C`

B

`-10^(@)C`

C

`10^(@)C`

D

`9^(@)C`

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The correct Answer is:
B
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ICSE-INTEGERS-REVISION EXERCISE
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