Answer:
6.52%
Step-by-step explanation:
According to the scenario, computation of the given data are as follows,
New machine cost = $808,200
Scrap sold = $22,800
Cost of investment = $808,200 - $22,800 = $785,400
Saving from new machine = $141,000
Annual depreciation of machine = $89,800
Net operating income = $141,000 - $89,800 = $51,200
Now we can calculate the rate of return by using following formula,
Simple rate of return = Net operating income ÷ Cost of Investment
= $51,200 ÷ $785,400
= 6.52%