Tick tock problem.

Classical Mechanics Level pending

One day a boy was combing his hair in front of a mirror.There he saw reflection of a numberless wall-clock.The time by the clock was 7:25.But he told to himself that the time was wrong.He was right also.Then what was the real time by the watch? (Note:If your answer is 12:40.Then write 1240 only.)


The answer is 435.

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1 solution

Mehedi Hasan
Nov 2, 2014

As the clock was seen on the mirror it s hands(both the minute and hour) will change sides. If we look carefully at a clock on a mirror when it s 25 past 7 the hour hand will be on 7 and the minute hand on 5.But as we are watching a reflection the hands will change sides.That means the hour hand will be on 4 and the minute hand on 7.That means the time will be 35 past 4.That s it.Here s your solution.

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