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A solution isto be kept between 68^@ F a...

A solution isto be kept between `68^@` F and `77^@` F. What isthe range in temperature in degree Celsius (C) if the Celsius / Fahrenheit (F) conversion formula is given by `F =9/5 C+32`?

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The correct Answer is:
`20^(@)C` and `25^(@)C`
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