show work please

A 40-year-old, 20,000-square-foot house has the following costs: (3 points) House replacement cost: Garage cost (400 square feet): Patio and yard improvements cost: Physical deterioration: Functional obsolescence (poor floor plan): Land value from comparable sales: $80/SF $30/SF $15,000 $27,000 $20,000 $100,000 What is the value of the described property as indicated by the cost approach