QA – Placement Quizzes | Clocks Clocks Clocks | Question 4

Find the original time of clock if:

• The time of a clock is 08:00,
• The clock gains 600 seconds, in one day.
• The time of the clock is 1pm on the following day.

(A)

48 minutes past 12

(B)

47 minutes past 10

(C)

48 minutes past 11

(D)

48 minutes past 11

Answer: (A)
Explanation:

From 8 am on a day to 1 pm on the following day will be 29 hrs. So, the clock gains 10 min in 24 hours = 24 hrs of the correct time. Hence, 145/6 hrs of the clock = 24 hrs of the correct clock. 29 hrs of the clock = (24 x 6/145 x 24)hrs of the correct clock = 28 hrs 48 min of the correct clock. The correct time = 28 hrs 48 min after 8 am. Hence, the original time is 48 minutes past 12.

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