2025

AMC 8

PROBLEM 7

Unlock brilliance, one problem at a time.

On the most recent exam on Prof. Xochi’s class,

  • \(5\) students earned a score of at least $95\%$,
  • \(13\) students earned a score of at least \(90 \%\),
  • \(27\) students earned a score of at least \(85 \%\),
  • \(50\) students earned a score of at least \(80 \%\),

How many students earned a score of at least \(80 \%\) and less than \(90 \%\)?

8
14
22
37
45

Hints

Use set theory.

Think

fast.

Genius!

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