※ 引述《lazyer (爆笑劇)》之銘言：
: 問橘本計量~ 題目英文有不懂地方~ 11版 3.1-6, 頁48~
: 6.
: A marketing firm determined that, of 200 households surveyed, 80 used neither
: Brand A nor Brand B soap, 60 used only Brand A soap, and for every houshold
: ^^^^^
: 請問for在這此是代表以used both brands of soap 為基準的意思嘛??太微妙了~
: 因為解答設both 有A有B為X ,只有B為3X
: that used both brands of soap, 3 used only Brand B soap. How many of the 200
: households surveyed used both brands of soap?
: (A)15 (B)20 (C)30 (D)40 (E)45 答案A
: 這題會算..只是對計量的英文有點不適應:P 請大家回應一下 我這樣解釋是正確的嘛:P
: 問簡單的不要笑我= =
你的解釋是對的。
看個例子：for 某甲, 某乙...
你的理解應該是：相對於某甲, 某乙...
for every household that used both brands of soap, 3 used only Brand B soap.
因此重點在every和3的對應。
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