Host A and B are each connected to a switch S via 100 Mbps links. Propagation delay on each link is 20 µsec. S is a store and forward device. It begins retransmitting a received packet 35 usec after it has finished receiving it. Calculate the total time (in µsec) required to transmit 10,000 bits from A to B as two 5000 bit packets sent one right after the other.