Dave's sandwich ship has an average demand of $140$ sandwiches $($units$)$ per hour.

Station$1$ takes the order and prepares the bread. processing time is $33$ seconds

Station$2$ applies the meat, cheese and sauce. Processing time is $43$ seconds

Station$3$ applies the vegies and gets payment from the customer. processing time is $35$ seconds what is the capacity per second for each station? per hour?