Suppose there is exactly one packet switch between a sending host and a receiving host. Assume each link has a distance 1, 250 Km with propagation speed 2.5 times 10^8 mps. Link 1 has a transmission rate 10 Mbps and Link 2 has a transmission rate 20 Mbps. Assuming that the switch uses store-and-forward packet switching, what is the total end-to-end delay to send a 2KB packet? (Ignore queuing and processing delay