maintanense case

I asked this query 2 times .plz answer fr this query.My mother and sister and me got a 500 rupees for each under maintanence case in 1999 when his(govt employee) salary was 3400..now my (boy)age is 26 unemployeed.sister age is 24 unemployeed..we r preparig for some exams..and we degree qualified..now my father salary is 61000.sixty one thousand rupees. 1.how much money my mother will get? 2.can we(sister and i)get money ? My father have a second wife and 2 child with her.age is 10 and 11. But my mother legally not separated. First he got a divorce.but after court cancelled divorce in 2005. Plzz answer ..thanku sir