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
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8 comments:
Answer is E.
i am madhu
answer should be e
a simple one e.88
e.88
88...
88...
e
e
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