Acomputer repair store has 2 helpdesks. Customers visit the store according to a Poisson process at a rate of 4 people per hour to get their computers repaired. The mean repair time on computers is 1/2 hour. The store only has parking for 6 customers. If the parking lot is full, then any newly arriving car leaves. In a steady state, what fraction of computers is brought to the store for repairs? What if there were 3 help desks, what would change?