QA – Placement Quizzes | Clocks Clocks Clocks | Question 2

A clock gains uniformly 5 min slow at 8 o’clock in the morning on Sunday and 5 min 48 sec fast at 8 pm on following Sunday. The correct time and day are:
(A) 21 min past 7 pm and Wednesday
(B) 20 min past 7 pm and Thursday
(C) 21 min past 7 pm and Thursday

(D) 20 min past 7 pm and Wednesday


Answer: (D)

Explanation: The given time from 8:00 am on Sunday to 8 pm on following Sunday = 7 days 12 hrs = 180 hrs.
So, the clock gains = (5 + 29/5)min = 54/5 min in 180 hrs.
Hence, 5 min are gained in (180 x 5/54 x 5)hrs = 83 hrs 20 min = 3 days 11 hrs 20 min.
The clock is correct 3 days 11 hrs 20 min after 8 am of Sunday.
So, the correct time and day will be 20 min past 7 pm on Wednesday.

Quiz of this Question
Please comment below if you find anything wrong in the above post



My Personal Notes arrow_drop_up

Recommended Posts: