From a survey of 100 college students, a marketing research company found that 65 students owned ipods, 45 owned cars, and 15 owned both cars and Ipods.

Question

(a) How many students owned either a car or an ipod (but not both)?

(b)How many students do not own either a car or an ipod?

Answer 1

Number(Ipad or Car)
= number(Ipad) + number(carss) - number(Ipads and cars)
= 65 + 45 - 15 = 95

which leaves 5 unaccounted for from the 100

so ....

a) 95 owned either Ipad or car
b) 5 owned neither

or

you could get the same result by constructing a Venn diagram