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Rita earns scores of 78, 82, 90, 80, and 75 on her five chapter tests for a certain class and a grade of 85 on the class project. The overall average for the course is computed as follows: the average of the five chapter tests makes up 60% of the course grade; the project accounts for 10% of the grade; and the final exam accounts for 30% . What scores can Rita earn on the final exam to earn a “B� in the course if the cut-off for a “B� is an overall score greater then or equal to 80, but less than 90? Assume that 100 is the biggest score that can be earned on the final exam and that only whole- number scores are given.

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