When customers arrive at Gilley\'s Ice Cream Shop, they take a number and wait t

Question

When customers arrive at Gilley's Ice Cream Shop, they take a number and wait to be called to purchase ice cream from one of the counter servers. From the experience in past summers, the store's staff knows that customers arrive at the rate of 40 per hour on summer days between 3:00 P.M. and 10:00 P.M. and a server can serve 15 customers per hour on average. Gilley's wants to make sure that customers wait no longer than 10 minutes for service. Gilley's is contemplating keeping three servers behind the ice cream counter during the peak summer hours. Will this number be adequate to meet the waiting time policy?

Explanation / Answer

Yes it would be adequate to meet the waiting time policy. If one server serves 15 customers per hour on an average then 3 servers can serve 45 customers per hour on an average which is sufficient as it is more than the rate of 40 customers per hour arriving at the shop during the peak hours.

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