Question 501539: (A U B)' (B' U A') draw a venn diagram to determine a amusement park survey 85 amusement parks it was answered 24 hotels on site,55 had water slides on site, 38 had a wave pool, 13 had a hotel on site and water slide, 10 had hotels and wave pool 19 water slides and wave pools 7 had all 3 features
Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website! The key to these Venn diagrams is to be able to find
the value of each of the little regions formed by the
intersection of 3 circles representing:
hotel on site = 24
wave pool = 38
water slide = 55
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There are 7 of these regions, an 1 of them is common to all 3
circles
The last statement says
"7 of the amusement parks have all 3", so you can label it.
You know that if you add up the 7 regions, you get 85
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Number the 6 regions that are left, and assign values that are given.
Remember that the area common to hotels and wave pools also
includes the center region common to all 3.
Good luck
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