Is it correct to say אם מצאת ארנק, מה היית עושה?
Someone has said "yes," but it would sound "archaic" and DL doesn't accept sentences constructed this way, my gever.
If you were from Israel, what you would do would likely be as honest as what these guys did.
eem hayíta motzé arnak mah hayíta oseh
feminine with audio: