I want to know the answer to the following question:
In pence, what did the cheapest beer cost in the four-ale bar?
All the background I'm provided with is that "By the 20th century, the saloon, or lounge bar, had become a middle-class room[citation needed]—carpets on the floor, cushions on the seats, and a penny or two on the prices,[citation needed] while the public bar, or tap room, remained working class with bare boards, sometimes with sawdust to absorb the spitting and spillages (known as "spit and sawdust"), hard bench seats, and cheap beer[citation needed].". Is that enough to answer the question?
Answer: no