In: Economics
A road resurfacing project costs $250,000, lasts 5 years and saves $150,000 annually in patching costs. MARR is 12%. Determine the future worth (in $).
Cost = $250,000
MARR = 12%
Net cost after 5 years would be [Cost * (1 + MARR)^Years] = [250,000 * (1 + 0.12)^5] = 440,585.4
Saving per year = $150,000
Savings in first year can be deposited in bank for 4 years, saving of second year can be deposited for 3 years and so on....
Future value can be calculated as: [Savings * (1 + MARR)^Year for which amount is deposited]
Future value of saving of first year is = [150,000 * (1 + 0.12)^4] = 236,027.9
Future value of saving of second year is = [150,000 * (1 + 0.12)^3] = 210,739.2
Future value of saving of third year is = [150,000 * (1 + 0.12)^2] = 188,160
Future value of saving of forth year is = [150,000 * (1 + 0.12)^1] = 168,000
Future value of saving of fifth year is = [150,000 * (1 + 0.12)^0] = 150,000
Sum of future value for 5 years is 236,027.9 + 210,739.2 + 188,160 + 168,000 + 150,000 = 952,927.1
Future value of project = Sum of future value - Net cost after 5 year = 952,927.1 - 440,585.4 = 512,341.7