Need some help with these cloud computing questions. Amdahls law and other things

Suppose 95% of a program can be parallelized and run on multiple CPUs instead of one CPU and in so doing, achieve a system efficiency of 80%. Using Amdahls law, determine the number of processors that are being used in this case. 10 points

2. Given a speed up of 20 on 32 processors, what is the percentage of the program that can be parallelized? Use Amdahls law. 10 points

3. Say there are 5 VMs each with 2,000 MB memory allocated. 2 of these VMs have their share values set to normal while 3 VMs have share value set to high. The ESX host only has 4,000 MB of physical machine memory available for virtual machines. Determine the number of shares and the amount of physical memory that will be assigned to each VM based on these share values. 10 points