On a Wednesday afternoon, Marty McFly starts his DeLorean at 14:00 hours and travels 30 years in the past.
After spending 3 days 30 minutes, travels 60 years to the future where he stays for another 3 days and 30 minutes.
He sets his clock to 30 years in the past to 14:00 hours and safely makes it to the present.
Question : So what day of the week is it for him today and what is the total time Marty McFly was actually "away" Time Travelling?
Hint : No Tricks, simple straight forward maths. Will clear your time travel concepts. Disregard leap year, location, time zone changes.