Consider an assembly line balancing problem in which no precedence constraints exist onthe $20$ operations, and the maximum amount of daily work content at a workstation equals$8$ hours. We wish to allocate operations to workstations in order to minimizethe total number of workstations$\mathrm{.}1$: $3\mathrm{.}5,2$: $4\mathrm{.}7,3$: $3\mathrm{.}4,4$: $4\mathrm{.}5,5$: $2\mathrm{.}1,6$: $4\mathrm{.}7,7$: $3\mathrm{.}1,8$: $2\mathrm{.}9,9$: $4\mathrm{.}4,10$: $2\mathrm{.}1,11$: $4\mathrm{.}6,12$: $2\mathrm{.}9,13$: $3\mathrm{.}5,14$: $2\mathrm{.}8,15$: $3\mathrm{.}5,16$: $3\mathrm{.}1,17$: $2\mathrm{.}8,18$: $4\mathrm{.}8\}$ First fit method