The cost of gracing and spreading cyavel co a curvy rural road is expected to be $$300,000.$ The road will have to he maintaned at a cost of $$,46,000$ per year. Even though the new road is not very smooth, it alows access to an area that previously could only be rescherl with off road vehicles. The along the marl if the previous marker valie of the property was $$900,000.$ a $20$ year snuxy period.

The conventional $\frac{B}{C}$ ratio is