In a nationwide poll, N people were interviewed. If 1/5 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?	Pick one:
A) N/8
B) 6N/7
C) 4N/15
D) 7N/15
E) 14N/15
The number of people who answered yes to both questions is (1/3)(1/5)N = N/15   The number of people who did not answer yes to both is 1 - N/15 = 14N/15   The answer is 14N/15.
<result>E</result>
In a nationwide poll, N people were interviewed. If 1/5 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?