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26 Dec 2024, 12:28
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
66% (02:27) correct
33% (01:30) wrong based on 3 sessions
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Benjamin’s average (arithmetic mean) on the six biology tests he took last semester was 89. On each of his first five tests, his grade was between 90 and 100, inclusive. Which of the following could have been his grade on his sixth test?
Indicate all such grades.
A. 15
B. 25
C. 35
D. 45
E. 55
F. 65
G. 75
H. 85
I. 95
Indicate all such grades.
A. 15
B. 25
C. 35
D. 45
E. 55
F. 65
G. 75
H. 85
I. 95
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Official Answer
C,D,E,F,G
28 Dec 2024, 09:27
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OE
On the six tests, Benjamin earned a total of 6 × 89 = 534 points. On his first five tests, he earned at least 5 × 90 = 450 points, but no more than 5 × 100 = 500 points. So his grade on the sixth test was at least 534 – 500 = 34 and at most 534 – 450 = 84. Only answer Choices C, D, E, F, and G are between 34 and 84.
Answers: C, D, E, F, and G
On the six tests, Benjamin earned a total of 6 × 89 = 534 points. On his first five tests, he earned at least 5 × 90 = 450 points, but no more than 5 × 100 = 500 points. So his grade on the sixth test was at least 534 – 500 = 34 and at most 534 – 450 = 84. Only answer Choices C, D, E, F, and G are between 34 and 84.
Answers: C, D, E, F, and G
