Free GMAT Test Questions

Question 1 of 1
Section: Quantitative Reasoning - Problem Solving
Topics: Average; Maximum and Minimum Values
Difficulty level: Medium

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Lee wants to score an average of at least 80 in his six tests. He obtained an average score of 78 in the first five tests. If $s$ is his score in the final test, which of the inequalities below shows all values of $s$ that he could score to achieve the required average? All tests are scored out of 100.

A$s ≤ 100$
B$90 < s ≤ 100$
C$90 < s < 100$
D$90 ≤ s ≤ 100$
E$90 ≤ s < 100$