What is the Molarity of an Acid Sample Neutralized by NaOH?

[kara]

It requires 46.5 mL of 0.215M NaOH to neutralize 15.0 mL of aqueous H2SO4. What was the molarity (M) of the acid sample?

I'm not quite sure how to approach this quesiton, if anyone has and starter tips please let me know.

 

[kara]

So for a I know that M (molarity) = moles of solute/liters of sol'n

 

[kara]

Don't worry about it, I figured it out :D