10-1. There are several bowls on the table, each containing several grapes. Different bowls may contain different numbers of grapes. If 12 bowls are each added 8 more grapes, the average number of grapes in all the bowls will increase by 6. How many bowls are on the table
Answer: 16.

Solution: Let the number of bowls be $n$. The total number of berries increased by $12 \cdot 8=96$. Since the average number of berries increased by 6, the total number of berries should have increased by $6n$. Therefore, $6n=96$, from which we find $n=16$.