A clock is set right at 10 a.m. The clock gains 10 minutes in 24 hours. What will be the time displayed in the clock when the actual time is 3 p.m. on the following day?
A
12 minutes past 3 p.m.
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B
13 minutes past 3 p.m.
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C
12 minutes and 5 seconds past 3 p.m.
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D
13 minutes and 10 seconds past 3 p.m.
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Solution
The correct option is C 12 minutes and 5 seconds past 3 p.m. The clock gains 10 minutes in 24 hours =600 seconds in 24 hours ⇒60024 = 25 seconds per hour Time from 10 a.m. to 3 p.m. next day = 24+5 = 29 hours In 29 hours the clock will gain = 29*25 = 725 seconds = 12 minutes and 5 seconds