Answer:
The denominator (net annual cash flow) = $440,000
Step-by-step explanation:
The denominator (net annual cash flow)
Particular Amount
Saving in operating cost $460,000
Less: Depreciation $360,000
Net additional income $100,000
Income tax on above (20%) $20,000
Savings after tax $80,000
Add: Depreciation $360,000
Net annual cash benefit $440,000
The denominator (net annual cash flow) = $440,000