At a two-candidate election for mayor, 3/4 of the registered voters cast ballots. How many registered voters cast ballots for the winning candidate? 1. 25000 registered voters did not cast ballots in the election. 2. of the registered voters who cast ballots, 55 percent cast ballots for the winning candidate 是C 但我看不懂題目和條件的意思? 尤其是registered voters的意思是什麼? 為什麼條件1、2都不充分呢?