5.2. Masha eats a bowl of porridge in 12 minutes, and Bear eats it twice as fast. How long will it take them to eat six bowls of porridge?
Answer: 24 min.

Solution: In 12 minutes, Masha eats one bowl of porridge, and Bear eats 2 bowls. In total, 3 bowls of porridge are eaten in 12 minutes. Six bowls of porridge will be eaten in twice the time, i.e., $12 * 2=24$ min.

Comment: A correct answer without justification - 3 points.