Student CA Final
122 Points
Joined July 2013
Apply the formulae for future value of annuity
3137.25 = 100x{(1.045)n-1}/.045
(1.045)n = 2.4117625.
Now multiply 1.045 as many times till you get 2.4117625. No of times you multiply is your answer i.e. 20 years.