Question #N76
A survey of 100 people found that 60 people liked apples, 40 people liked oranges, and 20 people liked both apples and oranges. How many people liked only apples?
A. 20
B. 40
C. 60
D. 80
Correct Answer is: A
We can use a Venn diagram to solve this problem. Let A represent the set of people who like apples and O represent the set of people who like oranges. The number of people who like both apples and oranges is the intersection of sets A and O. Thus, 20 people like both apples and oranges, and 40 – 20 = 20 people like only oranges. The total number of people who like apples is 60, so 60 – 20 = 40 people like only apples.