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Problem solving question (m25#26)

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Problem solving question (m25#26) [#permalink] New post 19 Jan 2010, 18:03
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At the end of the term, a group of three students has to take three tests. The maximum score on each test is 200. The table below shows the number of points scored by each of the students on tests 1 and 2.
test 1 test 2
student 1 30 50
student 2 40 54
student 3 14 28

How much will the second student have to score on test 3 so that his average performance for the three tests would equal 30% ?
(A) 56 points
(B) 64 points
(C) 72 points
(D) 81 points
(E) 86 points

How should one interpret average performance in the above question?
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Re: Problem solving question [#permalink] New post 21 Jan 2010, 09:37
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suhasrao wrote:
At the end of the term, a group of three students has to take three tests. The maximum score on each test is 200. The table below shows the number of points scored by each of the students on tests 1 and 2.
test 1 test 2
student 1 30 50
student 2 40 54
student 3 14 28
How much will the second student have to score on test 3 so that his average performance for the three tests would equal 30% ?
a.56 points
b.64 points
c.72 points
d.81 points
e.86 points

How should one interprt average performance in the above question?


Question is asking for SECOND Student's average Score so forget about student ONE and THREE

now maximum score on each test is 200 points
so 30% would be 60 point

(40+54+A)/3=60
A=86
Re: Problem solving question   [#permalink] 21 Jan 2010, 09:37
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