# X-Therm

Classical Mechanics Level pending

John invented a new thermometer. He called it X-Therm. John knows that, $$-30^\circ$$ X represented the freezing point of water, and $$90^\circ$$ X represented the boiling point of water.

One day, John measure a water with his thermometer, for his science essay, it showed $$60^\circ$$ X. The problem is, John has to use the International System of Units (SI) for his essay - which is the Kelvin scale. According to the data above, what is $$60^\circ$$ X in Kelvin ?

Hint : The Kelvin's freezing point is 273, and the boiling point is 373

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