5) Jamie borrowed $600 000 to buy a studio apartment at 7.5% p.a. reducible interest. He made repayments of $5000 monthly. The table below shows the progress of his loan for the first 2 months. Month (n) Principal (P) Interest (1) Balance (P +I-R) Amount owing before repayment (P+1) $603 750 $600 000 $3750 $598 750 2 $598 750 $3742.19 $602 492.19 $$597 492.19 a) Show how the interest of $3750 in the first month was calculated. b) Show the progress of the loan for the next 2 months. c) Find the principal at the start of the 5th month. d) How much has Jamie paid off the principal after 4 months. e) How much interest was paid in the first 4 months? f) How much interest would Jamie pay in 4 months for a loan of $600 000 at a flat interest rate of 7.5% p. a