Accounts doubt wtr maths calculation

harish ragav (student-IPCC) (407 Points)

28 November 2012  

profit expected to next 3 years is 50000/ an discounting/present value factor/inflation rate 10% value of good will @ 2 yrs purchase

pls explian with the help (1/1+r)^n this formula nd explain how to calculate (1/1+r)^n in ordinary calculator.........