please keep 4 decimal points

[10] An investor begins with a $ 800 investment and all the deposits, withdrawals and the balance of the investment are listed in the following table (Table 2). Table 2 Year 0 1 Deposits Withdrawals Balance 800 200 1050 100 1000 300 1350 1400 2 3 4 2 (a) [5] Find the dollar-weighted rate of interest (compound interest). (b) [5] Find the time-weighted rate of interest (compound interest)