Jerry N.
asked • 12/08/20A survey of 1200 people in a certain city indicates that 830 own microwave ovens, 720 own DVD players, and 570 own microwave ovens and DVD players.
A survey of 1200 people in a certain city indicates that 830 own microwave ovens, 720 own DVD players, and 570 own microwave ovens and DVD players.
(A) How many people in the survey own either a microwave oven or a DVD player?
(B) How many own neither a microwave oven nor a DVD player?
(C) How many own a microwave oven and do not own a DVD player?
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1 Expert Answer
Mike D. answered • 12/08/20
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Draw a Venn diagram.
570 own microwaves and DVD players.
So 830 - 570 = 260 own microwaves only
720 - 570 = 150 own DVDs only.
And 1200 - 570 - 260 - 150 = 220 own neither
(a) 570 + 260 + 150 = 980
(b) 220
(c) 260
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Mark M.
At some time you should attempt one of these on your own. Then ask for assistance.12/08/20