[計量] GWD 2-Q18
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?
A.33 1/3%
B.40%
C.50%
D.60%
E.66 2/3%
Ans: C
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