QA – Placement Quizzes | Clocks
Clocks
Clocks | Question 3
On the birthday of Sam, Param gave him an alarm clock, now Sam sets alarm at 5 am, and Sam notices that:
- The clock loses 960 seconds in last one day.
- Effectively, the clock indicates 10:00 pm on the 4th day.
Find out the original time of the clock:
(A)
9 pm
(B)
10 pm
(C)
11 pm
(D)
08 pm
Answer: (C)
Explanation:
From the given information the time from 5 am on a day to 10 pm on the 4th day is 89 hrs. So, 23 hrs 44 min of this clock = 24 hrs of correct clock. Hence, 356/15 hrs of this clock = 24 hrs of correct clock. 89 hrs of the clock = (24 x 15/356 x 89)hrs of correct clock = 90 hrs of correct clock. Hence, the original time will be 11 pm.
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Last Updated :
28 Jun, 2021
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