At the end of every year an investor pays £2,000 towardsadditional voluntary contributions to build up a private pensionfund. The investor intends to retire in 30 years and wants thepension fund to contain at least £100,000 at the date ofretirement. What is the annual effective rate at which thecontributions should accumulate? (Perform few steps of both thebisection method and the interpolation method with suitablestarting values)
