please solve with formulas like (F/P, 5% , n) not with the excell.

C.4. The county engineer asks you to calculate the cost of maintaining a portion of the county's graded roads by using county equipment compared to contracting with a private contractor. Use i = 1 percent per month. Alternative A. Use county equipment and personnel. buy equipment = $200,000 paid now Tesale at EOM 60 = $30,000 labor & materials = $20,000/month for the first 10 months equipment O&M = increasing by 0.5%/month for each subsequent month Alternative B. Contract the work for $30,000 per month with no increases over the 60- month period. Find the equivalent present value of each alternative and compare