Thirty percent of the members of a swim club have passed the lifesaving test. Among the members who have not passed the test, 12 have taken the preparatory course and 30 have not taken the course.Howmany members are there in the swim club?
(A) 60
(B) 80
(C) 100
(D) 120
(E) 140
答案：A
Car A is 20 miles behind Car B, which is traveling in the same direction along the same route as Car A.Car Ais traveling at a constant speed of 58 miles per hour and Car Bis traveling at a constant speed of 50 miles per hour. How many hours will it take for Car Ato overtake and drive 8 miles ahead of Car B ?
(A) 1.5
(B) 2.0
(C) 2.5
(D) 3.0
(E) 3.5
答案：E
答案：D
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