Rebecca R. answered 08/06/18
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Hi, Vanessa!
Okay, so if 20 people are going altogether, then 11 + 14 = 25 is 5 extra people.
Therefore, 5 people must be going to both days.
So, to find out how many people are only going on Saturday, subtract 11 - 5 and get 6 people. Therefore, 6 are going only on Saturday. Your answer is C
In addition, 14 - 5 = 9 are going only on Sunday and 5 others are going both days. 6+9+5=20