Concept:The equal annual installment is found by dividing the loan amount by the present value annuity factor.Explanation:Given: Loan amount PV=Rs. 5,00,000, interest rate 10%, term 20 years, and annuity factor P(20,0.10)=8.51356.The formula is: Installment=Annuity factorPV​.So, Installment=8.513565,00,000​=58,729.84 (approximately).Answer:Rs. 58,729.84