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A clock is set right at 8 a.m. The clock gains 10 minutes in 24 hours will be the true time when the clock indicates 1 p.m. on the following day?

A. 48 min. past 12.

B. 46 min. past 12.

C. 45 min. past 12.

D. 47 min. past 12.

View Answer

Correct choice: A

Explanation:

Time from 8 a.m. on a day to 1 p.m. on the following day = 29 hours. 24 hours 10 min. of this clock = 24 hours of the correct clock. 145/6 hrs of this clock = 24 hours of the correct clock. 29 hours of this clock = 24*6/145*29 hrs of the correct clock = 28 hrs 48 min of the correct clock. Therefore, the correct time is 28 hrs 48 min. after 8 a.m. This is 48 min. past 12.

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