Law of meanness: a riddle about the three daughters of the king and one unfortunate kettle

The king had three daughters. Two of them madly wanted to get married, and the third did not see herself as a wife at all. For a long time the king could not decide whose husband would later become the king’s heir and head the state. And he came to mind one decision that will allow at the same time and check the daughters on the housekeeping.

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Photo source: pixabay.com

The king gave his daughters three identical kettles with the same amount of liquid and announced that her husband, who boils water faster, will become the heir to the throne. However, it so happened that the third daughter, who did not want to get married, began to boil most rapidly. Why do you think this happened? We will publish the correct answer below the photo, but do not peek until you completely surrender!

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Photo source: pixabay.com

As it turned out later, the girls who really wanted to get married, constantly lifted the lid and checked whether it was already boiling.And the daughter who did not want to become the wife of the future king did not lift the lid at all, so the water boiled faster.