u/Citruna

In class we got to do a task with titration. CH3COOH acid had to be diluted with water until the total volume was 100 mL. Then a 10 mL sample had to be neutralized using 0.1 M NaOH solution using the titration method. I got that 6 mL of NaOH solution were needed to neutralize the acid. With that I figured out that the concentration of CH3COOH was 6 mol/L. Is there any way to figure out how many mL of CH3COOH there were in the flask before dilluting it with water? The density wasn't given.