NTSE Stage 2 MAT 2015 Question Paper

No. of hours between 1 pm on Wednesday and 1 am on Friday = 60 hr.
Total change of time when minutes hand is slow and fast = 3 minutes
Now correct time $=\frac{60}{3}=20\mathrm{hr}$
So after 20 hours i.e. 1 pm on Tuesday the time will be 9.00 am on Wednesday.