Help me with this question 2:

A packet switch receives a packet and determines the outbound link to which the packet should be forwarded. Suppose there are 2 switches between A and B, these three links have transmission rates of 3 Mbps, 2 Mbps and 1 Mbps, respectively. Suppose there are 2 packets being transmitted back-to-back from A to B, each packet has size 1500 bytes. a) What is the queuing delay of the second packet at the first switch? b) What is the queuing delay of the second packet at the second switch