Concept:The present value of an annuity formula: Loan amount = Annual instalment × Present value annuity factor for 20 years at 10%.Explanation:Given: Loan P=50,00,000, annuity factor PVIFA(20,0.10)=8.51356.Annual instalment A=8.5135650,00,000​.Calculate: 50,00,000÷8.51356≈587298.4.Answer:Rs.587298.4