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Q.

A clock, which loses 5 minutes per day, shows the correct time at 12 noon on a Sunday. What time does the clock show at 12 noon on the next Sunday?

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a

11 a.m.

b

12 noon

c

11:35 a.m.

d

11:25 a.m. 

answer is D.

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Detailed Solution

Given: The clock loses 5 minutes every 24 hours.
And, we know, in a week there are 7 days.
So, total number of hours in 7 days =7×24 hours
Now,
The clock loses 5 minutes every 24 hours
Therefore, the clock in 7×24 hours it loses 7×5 minutes
      =35 minutes
 And, as we know that the clock shows 12:00 noon on a Sunday.
Therefore, on the next Sunday (i.e. after 7 days) the clock will lose 35 minutes.
Hence, the clock shows 12:00p.m.-35 minutes=11:25 a.m. on the next Sunday.
  
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