If you mean Tsunade , she is approximately 50 in part 1 of the anime.
JesuOtaku Anime Reviews - 2010 Anime Derby - Winter Season 2013 Part 1 4-1 was released on: USA: 13 February 2013
JesuOtaku Anime Reviews - 2010 Anime Derby Summer Season 2013 - Round 1 Part 1 4-9 was released on: USA: 3 September 2013
50-51 (bear in mind she has her jutsu to make herself appear younger). 51, not 50
Anime Abandon - 2011 Angel Cop Part 1 1-13 was released on: USA: 14 October 2011
JesuOtaku Anime Reviews - 2010 Attack on Titan Part 1 5-1 was released on: USA: 4 February 2014
JesuOtaku Anime Reviews - 2010 Anime Derby Winter Season 2013 Round 3 - Part 1 4-6 was released on: USA: 30 April 2013
Watari was born on May 1, 1933 (1936 in the anime). On the day of his death (November 5, 2004 or 2007 in the anime), he was 71 years old.
Anime Abandon - 2011 Angel Cop Part 2 1-14 was released on: USA: 28 October 2011
Anime Abandon - 2011 Mad Bull 34 Part I 1-9 was released on: USA: 14 August 2011
Anime Abandon - 2011 Mad Bull 34 Part II 1-10 was released on: USA: 28 August 2011
JesuOtaku Anime Reviews - 2010 Tamers Part Two Lead Guys 3-1 was released on: USA: 30 January 2012
if you mean series one, 220 eps