GMAT Data Sufficiency
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Source: GWD
Level: 4
What is the ratio of the average (arithmetic mean) height of students in class X to the average height of students in class Y?
(1)The average height of the students in class X is 120 centimeters.
(2)The average height of the students in class X and class Y combined is 126 centimeters.
- A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- C BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- D EACH statement ALONE is sufficient.
- E Statements (1) and (2) TOGETHER are NOT sufficient.