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1991 AJHSME Problems/Problem 18

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Problem

The vertical axis indicates the number of employees, but the scale was accidentally omitted from this graph. What percent of the employees at the Gauss company have worked there for 5 years or more?

for(int a=1; a<11; ++a) {  draw((a,0)--(a,-.5)); }draw((0,10.5)--(0,0)--(10.5,0));label("$1$",(1,-.5),S); label(...

\text{(A)}\ 9\% \qquad \text{(B)}\ 23\frac{1}{3}\% \qquad \text{(C)}\ 30\% \qquad \text{(D)}\ 42\frac{6}{7}\% \qquad \text{(E...

Solution

Let x be the amount of people each \text{X} represents. The percent of people that worked for five or more years is then \frac{2x+2x+2x+x+x+x}{5x+5x+8x+3x+2x+2x+2x+x+x+x}=30\% \rightarrow \boxed{\text{C}}.

See Also

1991 AJHSME (ProblemsResources)
Preceded by
Problem 17
Followed by
Problem 19
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