On average, 100 customers arrive per hour at the Gotham City Bank. The average service time for each customer is one minute. Service times and interarrival times are exponentially distributed. The manager wants to ensure that no more than 196 of all customers. Will have to wait in line for more than five minutes. If the bank follows the policy of having all customers jein a single line, how many tellers must the bank hire? What is the corresponding percentage of customers waiting in line. If needed, round your answer to a whole percentage