max 60d+30t+20c
subject to 
8d+  6t+1c  <=48
4d+  2t+1.5c<=20
2d+1.5t+0.5c<=8
      t     <=5
end




 LP OPTIMUM FOUND AT STEP      1

        OBJECTIVE FUNCTION VALUE

        1)      280.0000

  VARIABLE        VALUE          REDUCED COST
         D         2.000000          0.000000
         T         0.000000          5.000000
         C         8.000000          0.000000


       ROW   SLACK OR SURPLUS     DUAL PRICES
        2)        24.000000          0.000000
        3)         0.000000         10.000000
        4)         0.000000         10.000000
        5)         5.000000          0.000000

 NO. ITERATIONS=       1


 RANGES IN WHICH THE BASIS IS UNCHANGED:

                           OBJ COEFFICIENT RANGES
 VARIABLE         CURRENT        ALLOWABLE        ALLOWABLE
                   COEF          INCREASE         DECREASE
        D       60.000000        20.000000         4.000000
        T       30.000000         5.000000         INFINITY
        C       20.000000         2.500000         5.000000

                           RIGHTHAND SIDE RANGES
      ROW         CURRENT        ALLOWABLE        ALLOWABLE
                    RHS          INCREASE         DECREASE
        2       48.000000         INFINITY        24.000000
        3       20.000000         4.000000         4.000000
        4        8.000000         2.000000         1.333333
        5        5.000000         INFINITY         5.000000