algebra

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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.
(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?

  • algebra -

    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

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