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23 Dec 2020, 09:00
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
86% (01:03) correct
14%
(01:07)
wrong
based on 57
sessions
History
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Margaret has an average of 88 on her four calculus exams. To get an A, she must have a 90 average. What grade must she get on the next exam to bring her average up to 90?
(A) 90
(B) 92
(C) 94
(D) 96
(E) 98
(A) 90
(B) 92
(C) 94
(D) 96
(E) 98
23 Dec 2020, 09:21
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She got 2 less that reqd.90 in each 4 exam (as avg of earlier exams are 88).
Hence,total shortage in Previous 4 exam = 4x2=8.
On her 5th exam, she need 90+8=98 to keep avg 90 on her 5 exams.
ANS E
Posted from my mobile device
Hence,total shortage in Previous 4 exam = 4x2=8.
On her 5th exam, she need 90+8=98 to keep avg 90 on her 5 exams.
ANS E
Posted from my mobile device
23 Dec 2020, 11:32
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Bunuel
\(90*5 - 88*4 = 98\), Answer must be (E)
