Answer:
345,000
Explanation:
accounting rate of return:
[tex]\frac{net \:profit}{average \: investment}[/tex]
The average investment will be the average between the ending and beginning book value of the investment:
In this case, the acquisition of the software and his salvage value at the end of the useful life.
( 630,000 + 60,000 ) / 2 = 345,000