Candidates A, B, and C competed in an election. This election usually comprises two rounds. In the first round, all three candidates compete. A candidate qualifies for the second round only if he/she receives at least 20% of the votes cast in the first round. If two candidates receive less than 20% of the votes cast, the other candidate wins the election by default. If a candidate receives more than 60% of the votes in the first round, he/she wins the election without the second round. Was there a second round of election?All the information in the passage boils down to one thing: If one candidate wins over 60% of the votes in the first round, there will be no second round. Otherwise, there will be a second round.
After all, if two candidates receive less than 20% each, then the third candidate receives over 60%.
So, with regard to how many rounds there will be, the information presented all means the same thing.
(1) The votes received by Candidates A and B together is 82% of the total votes cast.This information indicates that C received under 20% of the votes since 100% - 82% = 18%.
At the same time, it does not indicate whether A or B did or did not win over 60% of the votes.
Insufficient.
(2) The votes received by Candidates C and B together is 42% of the total votes cast.Since 42% < 60% and 100% - 42% < 60%, this information indicates that no candidate won over 60% of the votes.
So, it confirms that there will be a second round.
Sufficient.
Correct answer: B