Answer:
I will pick system A
Step-by-step explanation:
System A has dual processor and it will concurrently run the two program(X and Y) in 50 seconds, with program X on the first processor and program Y on the second one while system B will take 70 seconds to run the two program since it runs on a single processor, it will run program X first and then program Y next, summing up to 70 seconds. so therefore I will pick system A since I'm considering the system throughput.