Additional information obtained at the optimal solution is presented in Table 5-2. Table 5-2. Additional information pertaining to optimal solutions of "Example 2-1" for use in Problem 5d onward Dual Variable u1 u2 Current Allowable rhs Increase 150 43.18182 0.625 0 47,500 Allowable Decrease 102.2727 104,500 53.57143 INFINITY INFINITY INFINITY INFINITY INFINITY 2 such that the optimal Right Hand Side Ranges 12 Value d (2 pts) What is the greatest cost in solution would remain constant? [$/mgd] of obtaining water from Source u3 1812.5 u4 0 u5 0 u6 0 u7 0 u8 0 -25 22.61941 -120 65.3125 -100 29.6875 0 125 0 54.6875 0 70.3125 Objective Function Ranges Allowable Allowable 1687.5 Variable X1 X2 X3 Increase 1812.5 Decrease Infinity e (3 pts) Using information already obtained in this problem, what is the value of u1? Present your answer to two decimal places. 12 1000 5400 Infinity 1000