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4. (Loans) A loan of f10,000 is repaid in 5 years with quarterly payments made in arrears. The initial payment is of amount P and subsequent payments increase at the end of every year by 2% p.a. compound. The interest rate is 6% p.a. effective. (a) (4 marks) Find the value of P. (b) (3 marks) What is the outstanding balance at the start of the final year? (c) (2 marks) What is the interest component of the first payment in the final year