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3 years ago

5

On two tests so far this year, a student received a 78 and a 93. The student wants an average between 80 and 90 inclusive. What

are all of the possible scores for the third test so that the student falls within this average?

1 answer:

Mariulka [41]3 years ago

8 0

<span>240 <= 171 + x <= 270
and now subtract 171 from all and get
69 <= x <= 99
So any score from 69 to 99 will do.</span>

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