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[Problem Solving]
试题详情
题目：
On a certain transatlantic crossing, 20 percent of a ship's passengers held round-trip tickets and also took their cars aboard the ship. If 60 percent of the passengers with round-trip tickets did not take their cars aboard the ship, what percent of the ship's passengers held round-trip tickets?
选项:
A、
B、40%
C、50%
D、60%
E、
答案:
C
提问：
老师，这道题我用维恩图还有TT图都求不出结果，是我的解题思路哪有问题吗？A选项是：33.33%；E选项是：66.66%
解答：
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提问：
老师，这道题我用维恩图还有TT图都求不出结果，是我的解题思路哪有问题吗？A选项是：33.33%；E选项是：66.66%
解答：
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阅读1272
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