2. The gure below presents the proposed cash ow for a major expressway bridge in a certain state. The plan is to toll the bridge 5 years after it is constructed, for a 10year period. is the proposal feasible from a viewpoint of economic efciency? The discount rate is 4% with a 0.35 probability, 5% with 0.10 probability, and 6% with 0.05 probability. (Round off the expected value of the discount rate to the nearest whole number). . . . Major Salvage Initial costs 10 Years of tolling revenue rehabilitation value $30M + $5Mfyr for 10 years $10M + SEM 1 1111111111 1 T t} s 9 111 11 12 13 14 15 40yrs