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2016 AMC 8 Problems/Problem 3

Revision as of 08:37, 23 November 2016 by Reaganchoi (talk | contribs) (Added page)
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3. Four students take an exam. Three of their scores are $70, 80,$ and $90$. If the average of their four scores is $70$, then what is the remaining score?

$\textbf{(A) }40\qquad\textbf{(B) }50\qquad\textbf{(C) }55\qquad\textbf{(D) }60\qquad \textbf{(E) }70$

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