TS Police SI Mains 2018 Arithmetic and Reasoning

Question 55

The minutes hand of an incorrect clock overtakes the hours hand at an interval of 63 minutes,Then the time it gains in a day, in minutes, is

Solution

The actual time taken by minute hand to overtake the hour hand every hour must be = 360/5.5 = 720/11 minutes.
However, the time getting taken in the incorrect clock = 63 minutes.

Thus the time gained every hour = (720/11) - 63 = 27/11 minutes 
Hence, the time gained during the entire day = Just slightly over 56 minutes i.e. option A


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