Bunuel wrote:
190 students go to a school bake sale. 95 buy a chocolate chip cookie, 75 buy a peanut butter cookie, and at least 12 buy both. What is the least number of students who could have bought neither type of cookie?
A. 10
B. 24
C. 30
D. 32
E. 45
We can use the equation:
#total = #chocolate chip + #peanut butter - #both + #neither
#neither = #total - #chocolate chip - #peanut butter + #both
As we can see from the equation, keeping everything else constant, the number of students who purchase neither
...
