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8. There are three exams in a marking period. A student received grades of 75 and 81 on the first two exams. What grade must the student earn on the last exam to get an average of no less than 80 for the
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8. There are three exams in a marking period. A student received grades of 75 and 81 on the first two exams. What grade must the student earn on the last exam to get an average of no less than 80 for the making period?

User Hani Honey
by
8.4k points

2 Answers

3 votes

Answer:

84 and more

Explanation:

84+81+75

=240

240/3

=80

User SkidRunner
by
8.5k points
1 vote
80*3= 240
Meaning all 3 averages must add up to 240, in order for it to be 80 or more.

75+81= 156
240-156= 84

The student must earn an 84
User Davies Odu
by
8.1k points
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