Answer:
15.0%.
Step-by-step explanation:
The formula to compute the annual rate of return is shown below:
= Annual net income ÷ average investment
where,
Annual net income is $30,000
And, the average investment would be
= (Initial investment + salvage value) ÷ 2
= ($400,000 + $0) ÷ 2
= $400,000 ÷ 2
= $200,000
Now put these values to the above formula
So, the rate would equal to
= $30,000 ÷ $200,000
= 15%