In the simplex algorithm presented in Chapter 3 the problem starts at a (basic) feasible
solution. Successive iterations continue to be feasible until the optimal is reached at
the last iteration. The algorithm is sometimes referred to as the primal simplex method.
making improvements in the assembly operations. Letting rl: r2, and r3 represent the proportions
by which the unit times of the three operations are reduced, the problem requires determining
rl> '2, and r3 such that the new imputed cost per per toy train is less than its unit
revenue-that is,