What is the ratio of the average (arithmetic mean) height of : DS Archive
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# What is the ratio of the average (arithmetic mean) height of

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What is the ratio of the average (arithmetic mean) height of [#permalink]

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18 Aug 2006, 21:56
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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.

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 statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
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19 Aug 2006, 01:16
Is it E??

If correct, I will explain.
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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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19 Aug 2006, 02:50
I will go for E as well. Would have elaborated, but seeing that ps is going to explain in a bit anyways, might as well let him do it - chances are his explanation will be the OE.
19 Aug 2006, 02:50
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