[問題] 一題數學

看板GMAT (GMAT入學考試)作者 ( )時間15年前 (2009/03/23 23:31), 編輯推噓2(202)
留言4則, 2人參與, 最新討論串4/4 (看更多)
On a certain road,10 percent of the motorists exceed the posted speed limit and receive speeding tickets,but 20 percent of the motorists who exceed the posted speed limit do not receive speeding tickets.What percent of the motorists on that road the posted speed limit? (A)10.5% (B)12.5% (C)15% (D)22% (E)30% ANS:(B) 感謝回答~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.228.43.177

03/23 23:47, , 1F
10%*the motorists = 80%*the motorists who exceed
03/23 23:47, 1F

03/23 23:48, , 2F
移項一下 就知道囉 10%/80%....
03/23 23:48, 2F

03/23 23:50, , 3F
謝謝你~
03/23 23:50, 3F

03/23 23:52, , 4F
我10分鐘前剛好做到這題耶 真巧 呵呵~~~
03/23 23:52, 4F
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