2. 7.7 The cost of grading and spreading gravel on a curvy rural road is expected to be $300,000. The road will have to be maintained at a cost of $25,000 per year. Even though the new road is not very smooth, it allows access to an area that previously could only be reached with offroad vehicles. The improved accessibility has led to a 150% increase in the property values along the road. If the previous market value of the property was $900,000, calculate the conventional B/C ratio using an interest rate of 6% per year and a 20-year study period.