switch connected to 3 stations in 10base-T LAN what is the average transmission rate?

if we have a switch connected to 3 stations what is the average transmission rate per station
if the stations work in full duplex mode then can we assume that each station can send to one station so that the average rate is 10 Mb/s or only two stations can communicate together and send , receive data while the third one will be idle till one station becomes free and so the average rate will be 20/3 Mb/s

Switch and hub
hub was the first generation of tcp/udp protocol , it divides the bandwidth between the stations connected to the network through the hub
then comes the switch: it has a high speed backbone bus to accomplish full bandwidth data rate for clients,for your example if the station is 100 Mb/s all of them will transfer data with the same speed but what if two of then sends data to the 3rd one at the same time
there is a buffer into the switch and also in the stations.here we will come to the protocol used by the stations
TCP: it ensures to deliver the data packets with (CRC & ACK - NACK)
UDP: less power then the tcp because there is nothing to ensure the delivery of data packets,
needs to read about network layers for more details
hope its helpfull