A small metal bar, whose initial temperature was $10$ C$,$ is dropped into a large container of boiling water. How long will it take the bar to reach $70$ C if it is known that its temperature increases $2$ during the first second? $($The boiling temperature for water is $100$ C$.$ Round your answer to one decimal place.$)$

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How long will it take the bar to reach $97$ C$?($Round your answer to one decimal place.$)$