SOLUTION: Im having diffuculties figuring this out. (10 pts) In a survey of 75 resorts, it was reported that: 34 provided refrigerators in the guest rooms 30 provided laundry services

Question 147949This question is from textbook
: Im having diffuculties figuring this out.
(10 pts) In a survey of 75 resorts, it was reported that:
34 provided refrigerators in the guest rooms
30 provided laundry services
37 provided business centers
15 provided refrigerators in the guest rooms and laundry services
17 provided refrigerators in the guest rooms and business centers
19 provided laundry services and business centers
7 provided all three features.
Construct a Venn Diagram (You may do the Venn diagram by hand and scan it in, if you like.) and use it to answer the following questions:
(a) How many of the resorts provided only refrigerators in the guest rooms?
(b) How many of the resorts provided exactly one of the features?
(c) How many of the resorts provided at least one of the features?
(d) How many of the resorts provided exactly two of the features?
(e) How many of the resorts provided none of the features?
If you want to make your Venn diagram on the computer, here are some symbols/shapes you might need:
Copy and paste. Resize as necessary!
This question is from textbook

Answer by scott8148(6628) (Show Source):
You can put this solution on YOUR website!
3 intersecting circles __ r, l, b

r-l-b __ 7
l-b __ 19-7=12
r-b __ 17-7=10
r-l __ 15-7=8
r __ 34-8-10-7=9
l __ 30-8-12-7=3
b __ 37-10-12-7=8

a) r=9

b) r + l + b =9+3+8=20

c) 7+12+10+8+9+3+8=57

d) l-b + r-b + r-l = 12+10+8 =30

e) 75-57=18