Ex. source (s) to destination (d)

path is: s -r2-r4-d (r2 and r4 Relay nodes)

From source to destination distance is 500 meters and bandwidth is 10 mbps, data size is 1 mb and relay node switching time 0.01 ms delay.The propagation delay on the link is 2 * 10^8 m/sec. Source to destination same bandwidth and no other connection to relay nodes.

How to calucate the throughput in the network.