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Katarina [22]
2 years ago
15

Please help me understand this, i've been stuck on this question

Mathematics
1 answer:
Drupady [299]2 years ago
4 0
A is correct.
to find the average, you add up all three test scores, divide the sum by 3
85≤(83+91+n)/3≤90

multiply 3 to eliminate the fraction: 255≤(174+n)≤270
subtract 174: 81≤n≤96
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