Answer:
Average rate of return = 11%
Step-by-step explanation:
Depreciation = (Cost of equipment - Residual value) / Useful years
Depreciation = (1,200,000-300,000) / 10
Depreciation = 90,000
Increase in net annual income = 180,000 - 90,000 - 7,500
Increase in net annual income = 82,500
Average investment = (1,200,000 + 300,000) / 2 = 750,000
Average rate of return = Increase in net annual income / Average investment
Average rate of return = 82,500/750,000
Average rate of return = 0.11
Average rate of return = 11%