This problem has FIVE multiple choice questions. Choose the correct answer from each dropdown box.

Rocky Top hardware specializes in manufacturing steel bars. The process starts with raw material $($carbon steel wire$),$ and then progresses sequentially through five steps using machines $A$ to $E,$ respectively $($see table below$).$ This is the only use that the five machines are put to$.$ The hourly throughput rates $($in lbs$/$hour$)$ for each machine are given below.

What is the maximum system output of steel product per hour?

If machine B in Step $2$ works at full capacity, what is the maximum number of steel bars waiting to be processed by machine $C$ in Step $3$ at the end of an $8-$hour day $($both machine $B$ and $C$ work for $8$ hours$)?$