问题
单项选择题
In a nationwide poll, P people were asked 2 questions. If 2/5 answered "yes" to question 1, and of those 1/3 also answered "yes" to question 2, which of the following represents the number of people polled who did not answer "yes" to both questions ？（）
A. 2/15 P
B. 3/5 P
C. 3/4 P
D. 5/6 P
E. 13/15 P
答案
参考答案：E
解析：
The people who answered "yes" to both questions are 1/3 of 2/5 P, so 2/15 P. Therefore, the people who did not answer "yes" to both questions are P-2/15 P=13/15 P.