SOLUTION: A survey was conducted in a city that distributes two newspapers, the chronicle and daily times. Of 100 people surveyed, 80 said that they subscribed to chronivle, 65 said that the

Question 894699: A survey was conducted in a city that distributes two newspapers, the chronicle and daily times. Of 100 people surveyed, 80 said that they subscribed to chronivle, 65 said that they subscribed to the daily times and 15 said they subscribed to neither. Find the probability that a random chosen person:
1. Reads atleast 1 of the papers
2. Reads both newspapers
I don't know where and how to start. I dont know what equations to use.
Need help ASAP.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A survey was conducted in a city that distributes two newspapers, the chronicle and daily times. Of 100 people surveyed, 80 said that they subscribed to chronicle, 65 said that they subscribed to the daily times and 15 said they subscribed to neither.
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Draw a Venn Diagram with two intersecting circles inside a rectangle.
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Label a circle C = 80
Label the other circle DT = 65
Label the empty space in the rectangle as 15
Label the rectangle as 100
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Label the intersection of the two circles as "x".
Equation::
subscribers = subscribers
80 + x + 65 = 100 - 15
145 + x = 85
x = -60
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Ans:: The intersection contains 60 subscribers.
60 people subscribe to both papers.
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Cheers,
Stan H.
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Find the probability that a random chosen person:
1. Reads atleast 1 of the papers:: 85/100
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2. Reads both newspapers :: 60/100
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