Quick question: Dektol and Rapid fixer exhaustion?

I mixed the Dektol 1 +3 and the Rapid Fixer 1 +9 I believe.

I used both for paper developing 2 weeks ago and put the rest in a light tight bottle.
I did about 8 contact sheets for both.

What's the exhaustion for both?
Thanks in advance.

We need to know the size of the contact sheets and the volume of the developer and fixer used. Otherwise, nothing can be derived from your figures.

PE

Photo Engineer said:

We need to know the size of the contact sheets and the volume of the developer and fixer used. Otherwise, nothing can be derived from your figures.

PE

Click to expand...

8x10 contact sheets

and about 3 liters for both so there is some air in the bottle.