17. Helping the collective farm with the harvest, 5th Grade A class collected 45715 kg of potatoes over 5 days. How many students were there in total, and how much did each student collect on average per day, if the average daily output of one student is a whole number of kilograms?
17. Let there be $x$ students, and the average daily output of a student be $y$ kg. Then $y \cdot x \cdot 5=45715$, from which $x y=9143$. Since $9143=41 \cdot 223$ and there cannot be 223 students in a class, there were 41 students, and each of them collected on average 223 kg of potatoes daily.