Correct option is C
Given:
96.5% of the participants did not win any prize.
700 participants won a prize..
Solution:
Let the total number of participants be represented by ( N ).
If 96.5% of participants did not win, then 3.5% of participants won a prize (since 100% - 96.5%) = 3.5% .
According to the problem, we know that 3.5% of N is equal to 700:
Solving for N :
Therefore, the total number of participants is 20,000.