(1 point) (Exercise 5.16) A bank customer borrows X at an annual effective rate of 5.8% and makes level payments at the end of each year for n years. (i) The interest portion of the final payment is $312.14. (ii) The total principal repaid as of time n1 is $86487.31. (iii) The principal repaid in the first payment is Y. Calculate Y. Y=$ I point) (Exercise 5.19 ) On a loan of $20000, interest at 9% effective must be paid at the end of each year. The borrower also deposits $X at the beginning of each year into a sinking fund eaming 3.8% ffective. At the end of 15 years the sinking fund is exactly sufficient to pay off the loan. Calculate X. I=$ (1 point) (Exercise 5.16) A bank customer borrows X at an annual effective rate of 5.8% and makes level payments at the end of each year for n years. (i) The interest portion of the final payment is $312.14. (ii) The total principal repaid as of time n1 is $86487.31. (iii) The principal repaid in the first payment is Y. Calculate Y. Y=$ I point) (Exercise 5.19 ) On a loan of $20000, interest at 9% effective must be paid at the end of each year. The borrower also deposits $X at the beginning of each year into a sinking fund eaming 3.8% ffective. At the end of 15 years the sinking fund is exactly sufficient to pay off the loan. Calculate X. I=$