ALGEBRA
posted by Monic .
From a survey of 100 college students, a marketing research company found that 70 students owned iPhones, 30 owned cars, and 15 owned both cars and iPhones.
(a) How many students owned either a car or an iPhone (but not both)?
students
(b) How many students do not own either a car or an iPhone?
students

a) 70b)15