[练习册] GWD-05-DS

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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.
  • Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • EACH statement ALONE is sufficient.
  • Statements (1) and (2) TOGETHER are NOT sufficient.
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