Read the dialogue and answer the question. P: Excuse me, I can’t pass the exit-gate, what’s wrong with my ticket? S: Sorry, your ticket is under fare, please make up the balance. P: How much is the balance of my ticket? S: Your ticket balance is 2.8 Yuan. Your journey fare is 4 Yuan, and you should pay 1.2 Yuan more. P: May I recharge my ticket? S: Certainly. P: OK, recharge 50 Yuan please. Question: How much is the full fare of the passenger's current journey?