+0  
 
0
37
1
avatar+20 

I can't even complete the graph on this one ^

 
davidgba64  Dec 7, 2017
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 #1
avatar+5552 
+1

Here's just the first one:

 

 

80 members would buy one, the other, or both. That means  125 - 80 , or  45  members would not buy either type.

 

The rest of the numbers I found by subtracting the total from the other numbers in the row or column.

 

So the probability that a randomly selected gym member would buy passion fruit but not tropical grape is...

 

19 / 125   =   15.2%   ≈  15%

 
hectictar  Dec 7, 2017
edited by hectictar  Dec 8, 2017

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