Answer:
26.4%.
Step-by-step explanation:
Net Profit:
= Saving of Labor & other Costs - Maintenance Cost of Machine - Depreciation On Machine (100,000/ 16 years)
= $40,000 - $10,000 - $6,250
= $23,750
Initial Investment:
= Cost of new Machine - Salvage value of old machine
= $100,000 - $10,000
= $90,000
Simple Rate of Return = Net Profit ÷ Initial Investments
= $23,750 ÷ $90,000
= 0.264 × 100
= 26.4%