How old was Adam when Eve was created too?

They were created at the same time, back to back.

The "Rib" story is a mistranslation of an Ancient Sumerian text. Look in the Book of Genesis and you will see two different creation stories of Adam and Eve.

Going by the account in Genesis, we learn that after God created Adam, He commissioned him with a variety of tasks. This indicates that Adam was created as a fully mature adult, not a baby, for conversation took place between them.

Adam was told to be a horticulturalist - to work the land and take care of the Garden of Eden (Gen. 2:15). God also brought all the animals and birds to Adam to see what he would name them (Gen. 2:19-20). I cannot imagine that taking half a day. It would require observation and forming conclusions about appropriate names, and - given the number of animals and birds there are (probably a great many more than at present, given how many species have gone extinct) - it could have taken months.

A key point in this process is that, after it, Adam became aware that there was no creature his like or his equal. It was only after he had names all the animals and birds that God then anaesthesized Adam and used a rib to form the first woman (think bone marrow - DNA).

Because Adam then exclaimed, "This is at last bone of my bones and flesh of my flesh", we can be sure a fair bit of time had elapsed from Adam coming to life and being presented with a wife. He was suitable appreciative. AiH

It depends what you mean by old. If you mean from the time Adam was created he was about one day old. If I am not mistaken he was created in the same day as Eve. If your asking what apparent age he had then I believe that around 25 as this is considered the age of maturity.

Going by the way men treat women in these deserted dwelling eastern countries I would guess about 6.

I think it was the same day when God created humankind

firstly Adam and then Eve.

about 4.4 billion years old.

Adam and Eve? sheesh.

old enough to make babies

A few days old, according to the creation story.