A flood control project with a life of 15 years will require an investment of $250,000 and annual maintenance costs of $20,000. The project will provide no benefits for the first two years but will save $60,000 per year in flood damage starting in the third year. The appropriate MARR is 20% per year. What is the conventional B-C ratio with present worth for the flood control project. (Enter your answer rounded to two decimal places; i.e., x.xx)