medium · SAT Math
A survey recorded whether each of 160 people owns a pet, categorized by age group. Among the 100 adults surveyed, 60 own a pet and 40 do not. Among the 60 teenagers surveyed, 40 own a pet and 20 do not.
If one pet owner is selected at random from the people surveyed, what is the probability that the selected person is a teenager?
- (1)/(4)
- (2)/(5)
- (5)/(8)
- (2)/(3)
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