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# A student s average (arithmetic mean) test score on 4 tests

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Manager
Joined: 06 Nov 2008
Posts: 53
A student s average (arithmetic mean) test score on 4 tests [#permalink]

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11 Nov 2008, 13:42
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A student’s average (arithmetic mean) test score on 4 tests is 78. What must be the student’s score on a 5th test for the student’s average score on the 5 tests to be 80?

A. 80
B. 82
C. 84
D. 86
E. 88
Director
Joined: 14 Aug 2007
Posts: 728

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11 Nov 2008, 19:41
haichao wrote:
A student’s average (arithmetic mean) test score on 4 tests is 78. What must be the student’s score on a 5th test for the student’s average score on the 5 tests to be 80?

A. 80
B. 82
C. 84
D. 86
E. 88

Recently posted Q.
Refer this t72749
Re: score   [#permalink] 11 Nov 2008, 19:41
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