1987 AHSME Problems/Problem 9

Problem

The first four terms of an arithmetic sequence are $a, x, b, 2x$ . The ratio of $a$ to $b$ is

$\textbf{(A)}\ \frac{1}{4} \qquad \textbf{(B)}\ \frac{1}{3} \qquad \textbf{(C)}\ \frac{1}{2} \qquad \textbf{(D)}\ \frac{2}{3}\qquad \textbf{(E)}\ 2$

1987 AHSME (Problems • Answer Key • Resources)
Preceded by Problem 8	Followed by Problem 10
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