A hotel has 5 clerks on duty, each with a separate waiting line. Between 3 and 5

Question

A hotel has 5 clerks on duty, each with a separate waiting line.  Between 3 and 5 pm they have an average of 90 guests each hour.  It takes an average of 3 minutes per guest to register.

Required:  What is the average amount of time a guest spends checking in?

3 Possible changes are being considered.

#1       Designate 1 of the 4 clerks to handling only corporate accounts which is 30% of the clients who are preregistered so it will only take them 2 minutes to check in. This will increase the average wait time to 3.4 minutes for the remaining 4 lines.

How would this change the average amount of time?

Explanation / Answer

1. 3.2 minutes

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