Post-UTME Mathematics 2015 Objective — Question 9
Question 9 of 40 from the Post-UTME Screening (Post-UTME) Mathematics 2015 Objective paper, with the correct answer and a full explanation.
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A student's test scores on the first five of six examinations to be given during the semester (75, 86, 75, 68, 85, ?). What must the student score in the last examination to make his average for the semester 81?
- A. 78
- B. 97Correct
- C. 95
- D. 89
Explanation
Sum needed for average 81 over 6 tests = 486; sum of first five = 389; last score = 486-389 = 97.
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