5. A Ioan of $1,000 is to be repaid by annual installments at the end of each year for 21 years using the following schedule: In years 1 through 10 , the installment is $50. In years 11 through 20 , the installment is $100. In year 21 , the installment equals the balance amount required to liquidate the loan. Interest is at a 5% annual effective rate. In which of the followiog ranges does the amount of principal included in the 12th installment lie