1道GWD的题

aprilhuang

 

On a certain transatlantic crossing, 20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship.  If 60 percent of the passengers with round-trip tickets did not take their cars abroad the ship, what percent of the ship’s passengers held round-trip tickets? C

 

 

A.     33 %

B.     40%

C.     50%

D.     60%

E.      66 %

aprilhuang

懂了啊, 原来是把这句话"If 60 percent of the passengers with round-trip tickets did not take their cars abroad the ship"的意思理解错了啊! 怪不得以前算不了. 谢谢了啊!

lingri88

设passengers with round-trip tickets为X.

(X*0.4)/0.2=1

X=1/2