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Paul's average (arithmetic mean) for 3 tests was 85. The average of hi
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15 Jan 2021, 06:02
15 Jan 2021, 06:02
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Paul's average (arithmetic mean) for 3 tests was 85. The average of his scores for the first 2 tests was also 85. What was his score for the third test?
(A) 80
(B) 85
(C) 90
(D) 95
(E) It cannot be determined from the information given.
Kudos for the right answer and explanation
(A) 80
(B) 85
(C) 90
(D) 95
(E) It cannot be determined from the information given.
Kudos for the right answer and explanation
Re: Paul's average (arithmetic mean) for 3 tests was 85. The average of hi
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15 Jan 2021, 07:47
15 Jan 2021, 07:47
1
Avg for 3 tests = 85
Total for 3 tests = 85 * 3 = 255
Avg for first 2 tests = 85 :: Total for first two tests = 85 * 2 = 170
So score in 3rd test = 255 - 170 = 85
Answer B
Total for 3 tests = 85 * 3 = 255
Avg for first 2 tests = 85 :: Total for first two tests = 85 * 2 = 170
So score in 3rd test = 255 - 170 = 85
Answer B
gmatclubot
Re: Paul's average (arithmetic mean) for 3 tests was 85. The average of hi [#permalink]
15 Jan 2021, 07:47
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