For your construction project, you want to purchase a specialized vehicle that will save $$30,000$ in labour costs per year. If you purchase this specialized vehicle for $$160,000$ today, how long will it take you to recover your investment at an interest rate of $15\%$ per year?

Find the discounted payback period.

Question $12$ options:

a$)$

None of the answers are correct

b$)$

$9$

c$)$

$11$

d$)$

$12$

e$)$

More than $13$