Re: [計量]PP兩題

看板GMAT (GMAT入學考試)作者 (想閉關可是門關不起來)時間17年前 (2008/01/01 21:02), 編輯推噓1(100)
留言1則, 1人參與, 最新討論串2/3 (看更多)
※ 引述《Jinai (橘子汽水好喝~)》之銘言: : 192. 18939-!-item-!-187;#058&011984 : Of the 75 houses in a certain community, 48 have a patio. How many of the : houses in the community have a swimming pool? : (1) 38 of the houses in the community have a patio but do not have : a swimming pool. : (2) The number of houses in the community that have a patio and : a swimming pool is equal to the number of houses in the community that : have neither a swimming pool nor a patio. : ans:(B) : 要如何解,我要用兩條件才能解出來 Suppose the number of houses with a swimming pool is 'X', with both is 'b', with neither is 'n'. According to (2), we know b = n. Therefore, 75 = 48 + X - b + n 75 = 48 + X X = 27 The answer can be directly obtained just from (2) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 123.195.155.25 ※ 編輯: micron 來自: 123.195.155.25 (01/01 21:03)

01/02 03:33, , 1F
感謝~~
01/02 03:33, 1F
文章代碼(AID): #17UZdyx8 (GMAT)
討論串 (同標題文章)
本文引述了以下文章的的內容:
17年前, 01/01
完整討論串 (本文為第 2 之 3 篇):
17年前, 01/01
1
1
文章代碼(AID): #17UZdyx8 (GMAT)