2. (8 points) 6 classmates agreed to play table tennis at the gym on Saturday morning from 8:00-11:30. They rented two tables for singles matches, with 4 people playing and the other two being referees, rotating until the end. It was found that everyone played for the same amount of time. Please answer: Each person played for _ minutes.
140
【Solution】Solution: $6 \div 2=3$ (groups)
11:30 - 8 hours = 3:30 = 210 minutes
$$
\begin{array}{l}
210 \times 2 \div 3 \\
=420 \div 3 \\
=140 \text { (minutes) }
\end{array}
$$

Answer: Each person played for 140 minutes.
Therefore, the answer is: 140.