Unreliable Clock Puzzle - Hint

#170

Your clock is not working properly(Unreliable Clock).
It is gaining 15 minutes every hour.
When you noticed this, you set 10 a.m. in the clock.
After that, you got busy in some work and when you saw the time again, it was showing 1 pm.
Also, somebody told you that the clock stopped working 4 hours ago.
So, what is the correct time now???

  Difficulty Level - 3/5

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   You can count clock-minutes for real hour..