Ple-Sen
Auto-translated
16.5 (1 from each, including Jert) + 16 in the treasury. Another 7 if Nayra shares Jert's savings. In total, that's either 32.5 or 39.5. 20 goes towards the book. That leaves 12.5/19.5 coins. A scroll costs 3 coins. That leaves 9.5/16.5. If Nayra shares, we can buy a cloak and duel with someone. If she doesn't lend, we have enough for 4 duels and a map.