1998 CEMC Gauss (Grade 7) Problems/Problem 4

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Problem 4

Jean writes five tests and achieves the marks shown on the graph. What is her average mark on these five tests?

[insert bar graph with 5 bars: 80, 70, 60, 90, 80]

$\text{(A)}\ 74 \qquad \text{(B)}\ 76 \qquad \text{(C)}\ 70 \qquad \text{(D)}\ 64 \qquad \text{(E)}\ 79$

Solution

The average of the $5$ tests is $\frac{80+70+60+90+70}{5} = \boxed{74}.$

The answer is $\text{(A)}$.

-edited by coolmath34

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