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4-6. An amount of $15,000 is borrowed from the bank at an annual interest rate of 12%. a. Calculate the equal end-ofyear payments required to completely pay off the loan in four years. b. Calculate the repayment amounts if the loan ($15,000) will be repaid in two equal installments 0f$7,500 each, paid at the end of second and fourth years respectively. Interest will be paid each year. Develop the tables similar to those in