DB Queries per page hit?

time to read 1 min | 147 words

I am listening to this, and the Jim Starkey mentioned something that made me perk my ears.

(It is on 14:00)

There are many more queries per human interaction, when you are running a dynamic web application - for anything that is not a trivial web application - you are looking at in excess of two dozens queries per page.

This seems to be like a large number of queries for page, but that is a gut feeling from someone that is still wonder about performance hit when he writes i+=1 instead of i++.

Does anyone has some numbers about the average queries per page count?