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Every student in a homeroom class takes a biology course or a Spanish course or both. If 18 take biology, 13 take Spanish and 5 take both, how many students are in the homeroom classroom?

gueesstt  Apr 10, 2018
 #1
avatar+87639 
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OK...look  at the following  :

 

 

So...the total number of students  is   8 + 5 + 13   =  26

 

 

cool cool cool

CPhill  Apr 10, 2018
 #2
avatar+604 
+1

Thank you!

gueesstt  Apr 10, 2018

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