The total number of votes is 4,850. Since 20% of the votes are declared invalid, the number of valid votes is:
\[ \text{Valid votes} = 80\% \times 4,850 \]
\[ = \frac{80}{100} \times 4,850 = 3,880 \]
The first contestant received 35% of the valid votes:
\[ \text{Votes of first contestant} = 35\% \times 3,880 \]
\[ = \frac{35}{100} \times 3,880 = 1,358 \]
The second contestant received the remaining valid votes:
\[ \text{Votes of second contestant} = 3,880 - 1,358 \]
\[ = 2,522 \]
Thus, the correct answer is (A) 2,522.
In a survey, 60 % of 200 students prefer online classes, and 25 % of the remaining prefer hybrid classes. How many students prefer neither?