What should the timing of transition slides be per minute?

How Many Slides to Use in a Presentation and for how long?

In the past if you asked a presentation skills “pundit” you were likely to hear “one slide per minute,” but times are changing and I don’t think the answer is as simple as a certain number of slides per minute. A presentation slide is supposed to be on for 15 seconds and stop to ask if anyone has any questions, if you are explaining something or reading alond with the slide it could be as long as you want it to be.

It depend on how long you want it to be.

Explanation: The more time you put the longer it shows on the screen.

i think its controle not shift