徐永強數學-p-set1-35

[邁向高等學府]

35. In a recent election, candidate A received x and candidate B received y of the votes of
the 7.34 million votes counted before the absentee ballots were tallied. What was the
percent change in the number of votes A received after the absentee ballots were
tallied?
(1) x – y = 391
(2) the difference between the number of votes received by each of the three candidates in the election before the absentee ballots were tallied and the number received after the absentee ballots were tallied was 5000.
答案為E
但我認為兩個條件在一起就可解出了…
為何為E呢？麻煩大家解釋一下…

[汪汪北鼻]

我選E
這二件事沒交集

(1) x – y = 391(不知absentee ballots及X+Y=?)
(2) the difference between the number of votes received by each of the three candidates in the election before the absentee ballots were tallied and the number received after the absentee ballots were tallied was 5000. (absentee ballots =5,000)


What was the percent change in the number of votes A received after the absentee ballots were tallied? X+Y=? 無法算出

[邁向高等學府]

我選E
這二件事沒交集

(1) x – y = 391(不知absentee ballots及X+Y=?)
(2) the difference between the number of votes received by each of the three candidates in the election before the absentee ballots were tallied and the number received after the absentee ballots were tallied was 5000. (absentee ballots =5,000)


What was the percent change in the number of votes A received after the absentee ballots were tallied? X+Y=? 無法算出

不好意思，absentee ballots在此指?

[汪汪北鼻]

由于各種原因不能在選舉日當天親臨投票的選民則可以通過郵寄提前進行 “缺席投票”(absentee ballots)。

[邁向高等學府]

我選E
這二件事沒交集

(1) x – y = 391(不知absentee ballots及X+Y=?)
(2) the difference between the number of votes received by each of the three candidates in the election before the absentee ballots were tallied and the number received after the absentee ballots were tallied was 5000. (absentee ballots =5,000)


What was the percent change in the number of votes A received after the absentee ballots were tallied? X+Y=? 無法算出

第一個條件的x+y不是7.34million嗎?

[汪汪北鼻]

嗯，我的意思是X+Y+absentee ballots=?