[問題] GWD26-Q2

[applepeko]

Q2:
The ratio of the number of women to the number of men to the number of children in a room is 5:2:7, respectively. What is the total number of people in the room?
(1) The total number of women and children in the room is 12.
(2) There are fewer than 4 men in the room.

我想 請問 一下條件(2)為什麼OK?
謝謝

[navywhite0425]

我是把它解讀成
w+C+4=M

所以在跟題目的比例相合

[applepeko]

我....不懂耶......怎麼會W+C+4=M??

[u9303127]

fewer than 表示 少4的意思
所以W+C=M-4

[applepeko]

咦? 條件2不是說房間裡的男生數目小於四嗎??
我暈了!!救救我

[kwtluck]

Q2:
The ratio of the number of women to the number of men to the number of children in a room is 5:2:7, respectively. What is the total number of people in the room?
(1) The total number of women and children in the room is 12.
(2) There are fewer than 4 men in the room.

我想 請問 一下條件(2)為什麼OK?
比例=> w:m:c =5:2:7, 又m要小於4
若m=3, w:m=5:2=x:3, x=15/2(人數不能是分數)
若m=2, w:m=5:2=x:2, x=5人
若m=1, w:m=5:2=x:1, x=5/2 (半個人,見鬼啦!! )
所以條件二可得人數為5人

[applepeko]

厲害
清楚明瞭!謝妮!
只是這樣算起來..房間裡共有14人
跟條件一不符=>這是我無聊對照的啦,我知道不能這樣看
不過想知道這樣ok嗎?
就是條件1,2都成立
但是得出的答案不一樣
這樣可以選D嗎??