Question

During the two hours of the morning rush, 100 customers per hour arrive at the coffee shop. The coffee shop has a capacity of 80 customers per hour. At what rate does the queue of customers at the coffee shop grow during this time? " 100 customers per hour 80 customers per hour 40 customers per hour 20 customers per hour 1

Answer 1

Answer:

Option (D) is correct.

Explanation:

Customers arrive at the rate of 100 customers per hour

Customers get serviced and leave at the rate of 80 customers per hour.

So in the one hour,

The balance customers remain in the queue:

= Customer arrive rate - Customers serviced and leave rate

=  100 - 80

= 20 customers

With every passing hour, the balance 20 customers keep getting added to the queue.

So the answer is 20 customers per hour.