Question

Is y =3?

Statements:
I. The average (arithmetic mean) of x, y and z is 0.
II. x = -y



A.
Only one of the statements, alone, is sufficient to answer the question but other statement is not.
B.
Each statement alone is sufficient to answer the question.
C.
Both statements I and II together are sufficient to answer the question asked but neither statement alone is sufficient.
D.
Statements I and II together are not sufficient to answer the question asked and additional data to the problem are needed.

Answer 1

Statements I and 2 together are not sufficient to answer the question asked and additional data to the problem are needed.