Consider a bank counter with four employees (who each work 60 minutes in an hour) serving the custom

Consider a bank counter with four employees (who each work 60 minutes in an hour) serving the customers. Deposit takes 5 minutes, cash withdraw takes 6 minutes, and electronic transfer takes 10 minutes. On average, there are 10 deposit transactions, 12 withdraw transactions, and 15 electronic transfer transactions in an hour. What is the actual utilization of the counter?and what is implied utilzation of counter?