How old did Adam and Eve look when they were created?

This might impossible to answer but... **How old did Adam and Eve look when they were created**? Certainly they were old not babies, considering Adam walked and talked and named animals and had sex with Eve. Is there any way of knowing this? > **Genesis 2:5-7 ESV -** When no bush of the field was yet in the land and no small plant of the field had yet sprung up—for the Lord God had not caused it to rain on the land, and there was no man to work the ground, and a mist was going up from the land and was watering the whole face of the ground— **then the Lord God formed the man of dust from the ground and breathed into his nostrils the breath of life, and the man became a living creature**. --- EDIT: I am assuming a plain interpretation of Genesis here. That Adam and Eve were formed as adults in a small amount of time by God.