Rebecca is developing a program that simulates the effect of rising ocean levels on the world's largest cities.When she ran her first version of the program on a computer in her research lab, the computer took 75 minutes to complete the simulation. To improve the performance, she parallelized the simulation, computing the effects on each city in parallel. When she ran the parallelized program on the same computer, it took an average of 15 minutes to complete.What is the speedup of the parallel solution?151/5605