10. (3 points) The teachers and students of a school donated a total of 1995 yuan to a poor area. The school has a total of 35 teachers and 14 teaching classes, with each class having the same number of students, more than 30 but no more than 45. If the average amount of money donated per person is an integer, then the average amount donated per person is $\qquad$ yuan.
10. (3 points) The teachers and students of a school donated a total of 1995 yuan to a poor area. The school has a total of 35 teachers and 14 teaching classes, with each class having the same number of students, more than 30 but no more than 45. If the average amount of money donated per person is an integer, then the average amount donated per person is $\qquad$ 3 yuan.

【Solution】If each class has 30 students, then the number of people who donated is $30 \times 14 + 35 = 455$ people; if each class has 45 students, then the number of people who donated is: $45 \times 14 + 35 = 665$ people;
$$
1995 = 3 \times 5 \times 7 \times 19 ;
$$

Among the factors, only $5 \times 7 \times 19 = 665$;
meets the requirement, meaning a total of 665 people donated.
$$
1995 \div 665 = 3 \text { (yuan); }
$$

Answer: The average amount donated per person is 3 yuan.
Therefore, the answer is: 3 .