A boy leaves home in the morning to go to school. At the moment that he leaves the house, he looks at the clock in the mirror. The clock has no number indication and for this reason, the boy makes a mistake in interpreting the time (mirror image). Just assuming the clock must be out of order, the boy cycles to school, where he arrives after twenty minutes. At that moment, the clock at school shows a time that is two and a half hours later than the time that the boy saw on the clock at home.

The question: At what time did he reach school?

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Another question: How can you divide the dial of the clock in three parts with two straight lines, in such a way that the sum of the numbers in each part is 26?

Another answer: Click here!