A factory produces 100 units of product A and 200 units of product B each day. Product A requires 2 hours to produce, while product B takes 3 hours. If the factory operates for 10 hours per day, how many workers are needed to meet production requirements?
Let's reason through the problem:

1. The factory produces 100 units of product A, which take 2 hours each. Therefore, it takes 100 * 2 = 200 hours to produce all units of product A.
2. Similarly, the factory produces 200 units of product B, which take 3 hours each. It takes 200 * 3 = 600 hours to produce all units of product B.
3. In total, the factory needs 200 + 600 = 800 hours of work to meet production requirements for both products.
4. The factory operates for 10 hours per day, so there are a total of 10 * 1 = 10 worker-hours available each day.
5. To find out how many workers are needed, we can divide the total required hours by the available worker-hours per day: 800 / 10 = 80.

Therefore, 80 workers are needed to meet the production requirements.