At the P-Pub, you pay to get in, but then each beer is free. A student arrives expecting to pay $20 to get in and expecting to drink 4 beers. The student is surprised to learn that she only has to pay $10 to get in. If the student is rational, how many beers does she drink?
8 beers.
More than 4 beers, but not necessarily 8 beers.
4 beers.
2 beers.
Fewer than 4 beers, but not necessarily 2 beers.