A) 10 : 30 pm Wednesday
B) 9 : 15 pm Wednesday
C) 10 : 45 pm Wednesday
D) 10 pm Wednesday
Correct Answer: D
Solution :
Time from 10 am on Wednesday to 1 pm the following day \[=1\,\,\text{day}\,\,3\,h=27\,h\] The watch gains\[\left( 2+2\frac{1}{2} \right)\]min or\[\frac{9}{2}\]min in 27 h Now, \[\frac{9}{2}\] min are gained in 27 h. \[\therefore \] 2 min are gained in \[\left( 27\times \frac{9}{2}\times 2 \right)=12\,\,h.\] So, the watch is correct at 10 pm on Wednesday.You need to login to perform this action.
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