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In a class of $40$ students, $18$ said they liked apple pie, $15$ said they liked chocolate cake, and $12$ said they did not like either. How many students in the class liked both?

 Mar 28, 2020
 #1
avatar+4568 
+1

40-12=28 people had to like some flavor.

 

 

Let y be the people who like both...

Thus, we have

 

(18-y)+(15-y)+y=28

 

33-y=28

 

y=5

 

Thus, there are five(5) students in the classroom who liked both apple pie and chocolate cake.

 Mar 28, 2020
 #2
avatar+1970 
+1

Correct!

CalTheGreat  Mar 28, 2020

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