In a town, 1/3 of the population are vegetarians. Among the vegetarians, 2/5 are men. What fraction of the entire population are vegetarian men?
Let's break this down step-by-step:
1. We know that 1/3 of the population are vegetarians.
2. Among these vegetarians, 2/5 are men.
3. To find out what fraction of the entire population are vegetarian men, we need to multiply the fractions together.

So, (1/3) * (2/5) = 2/15

The answer is that 2/15 of the entire population are vegetarian men.