Consider the material handling task shown in the figure below. A product of $11\mathrm{.}34$ Kg weight come to the worker with a rate of $1$ unit per minute. Upon arrival, the worker packages the product in a cardboard box and then he slides the box to another conveyor behind him on table B$.$ Suppose that no significant control of the object is needed at the destination, but the worker needs to twist to pick up the product. He can also flex the fingers to the desired $90$ degrees angle to grasp the cardboard box. He performs this job for a normal $8-$hour shift, including regular rest allowance breaks