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1.
A watch which gains 5 seconds in 3 minutes was set right at 7am . In the afternoon of the same day when the true time is 1 pm, the watch will indicate :
- A. 1:10pm
- B. 1:10pm
- C. 1:10pm
- D. 1:10pm
Answer: Option A
Explanation:
The time difference = 1pm - 7 pm = 6 hour = 360 minutes
3 minute gains from 5 second
1 minute gains from 5/3 second
360 minute gains from (5×360)/3 second = 600 second = 10 minute
So, at 1 PM, the watch will indicate = 1PM + 10 minute = 1 : 10 PM
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