In a nationwide poll, N people were interviewed. If 1/6 of them answered yes to question 1, and of those, 1/3 answered yes to question 2, which of the following expressions represents the number of people interviewed who did NOT answer yes to both questions?
Choose the most appropriate option:
A) N/9
B) 8N/9
C) 11N/18
D) 17N/18
E) 31N/36
The number of people who answered yes to both questions is (1/3)(1/6)N = N/18   The number of people who did not answer yes to both is 1 - N/18 = 17N/18   The answer is 17N/18.
<result>D</result>
In a nationwide poll, N people were interviewed. If 1/6 of them answered yes to question 1, and of those, 1/3 answered yes to question 2, which of the following expressions represents the number of people interviewed who did NOT answer yes to both questions?