A DS question from Kaplan
Does the average of a,b, and c equal c ?
1) c - a = c + b
2) c = 0
I am not satisfied with the explanation given at the end of the book.
I thought that the answer would be A as from solving for statement 1) we get a + b = 0
therefore the average for (a + b + c) /3 would give us c /3. Therefore statement 1 is sufficient to tell me that the average of the three will never be equal to c . Kaplan
has a different explanation for it. Their answer was C i.e both statement taken together answers the question.
Can somebody explain it to me