Calculate the Accounting Rate of Return $($ARR$)$ for the following projects:

$1.$ A project has an initial cost of $$80,000.$

The project$$s Earnings after tax $($in USD$)$ for the next $5$ years is given below.

Year $12345$

Earnings after tax $($in $$)10,00010,00030,00025,00020,000$

Find out the Accounting Rate of Return $($ARR$)$ for the firm.