A watch which gains 5 seconds in 3 minutes was set right at 7 am. In the afternoon of the same day. When the true time is 1 pm, the watch will indicate:
সমাধান
সঠিক উত্তর: Option A
Time difference 1 PM-7AM=6 Hour=360 minute
3 Minutes gains from 5 second
1 minutes gains from 5/3 second
360 minutes gains from 5×360/3
=600 second = 10 min
the watch will indicate:1 PM + 10 min=1:10 PM
