You See 3rd Ninja World war Ended When Minato was about 18-20 Year Old.
It is Said in Episode [119-120] That 3rd Ninja world war was Happening For Over DOzon Years means More than 12 Years so If We think About That And - the 12 years we Get the Age of Minato before the 3rd World World war His age was is Less than 8 year old. (Maxiumum age 20- Minimum Years of War 12 = Less than 8 Year)
When 2nd World War Ended Nagato was Atleast More than 16 Years. And 2nd World war has Been taken Place Before 3rd World War lol i know thats Obvious. So Lets See this
( Nagatos age when 2nd World war Ended Atleast 16 + No of years took to end the 3rd World war Ended Atleast 12 = Nagatos Minimum Age when 3rd World War Ended is 28 ]
So [ Nagao's Minimum age When 3rd World War Ended is 28 - Minato's Maximum Age when 3rd World War Ended 20 = Minimum Age Gap Between Minato and Nagato is 8 Years]
That Proves Nagato is Atleast 8 Year Older Than Minato Same as Kakashi is Atleast 8 Year Older than Itachi.
It is Said in Episode [119-120] That 3rd Ninja world war was Happening For Over DOzon Years means More than 12 Years so If We think About That And - the 12 years we Get the Age of Minato before the 3rd World World war His age was is Less than 8 year old. (Maxiumum age 20- Minimum Years of War 12 = Less than 8 Year)
When 2nd World War Ended Nagato was Atleast More than 16 Years. And 2nd World war has Been taken Place Before 3rd World War lol i know thats Obvious. So Lets See this
( Nagatos age when 2nd World war Ended Atleast 16 + No of years took to end the 3rd World war Ended Atleast 12 = Nagatos Minimum Age when 3rd World War Ended is 28 ]
So [ Nagao's Minimum age When 3rd World War Ended is 28 - Minato's Maximum Age when 3rd World War Ended 20 = Minimum Age Gap Between Minato and Nagato is 8 Years]
That Proves Nagato is Atleast 8 Year Older Than Minato Same as Kakashi is Atleast 8 Year Older than Itachi.