A3.. By applying Life Cycle Costing technique, evaluate which building with = cost data shown below is more economical. Both buildings provide the same net floor areas and are expected to have 50 years building life. Interest rate is 5% per annum. + + + + + Initial cost- Repair cost- Maintenance costa Energy cost- Major Renovatione Building X Building Y $50,000,000 $65,000,000+ $500,000 in every 10 years. $800,000 in every 20 yearsel $300,000 per annum $150,000 per annum $1,000,000 per annum $500,000 per annum Not applicable $1,000,000 in every 15 years. $3,000,000 $1,500,000 + + Demolition/Disposal. (15 marks)