4. Let assume that we have a single stage, non-pipelined machine and a pipelined machine with 5 pipeline stages. The cycle time of the non-pipelined machine is 4ns and the pipelined machine is lns 4.1 Assuming no stalls, what is the speedup of the pipelined machine over the single stage machine? 42 Given the pipeline stalls l cycle for 40% of the instructions, what is the speed up now