IT$-640$: Telecommunications$/$Networking Assignment #$1$b$,(100$ points total$)$

If an Ethernet device transmits at $200bps,$ how long do two $200-$bit packets take to be transmitted over one link $?(50$ points$)$

What is the traffic intensity in a router that receives $100-$byte packets every second and forwards them over an outgoing link at $1600$ bps $?(50$ points$)$