Two product models, A and B$,$ are to be produced on a mixed model assembly line. Hourly

production rate and work content time for model A are $12$ units$/$hr and $32\mathrm{.}0$ min, respectively;

and for model B they are $20$ units$/$hr and $21\mathrm{.}0$ min.

Line efficiency $=0\mathrm{.}95,$ balance efficiency $=0\mathrm{.}93,$ repositioning time $=0\mathrm{.}10$ min, and manning

level $=1.$

a$)$ Determine how many workers and workstations must be on the production line in order to

meet this workload.

b$)$ Determine $($i$)$ the fixed rate launching interval and $($ii$)$ the launch sequence of models A and B

during one hour of production. Show only the first three launches.

ENGG