FERMAT 2007 Problem 9

Past Contests FERMAT FERMAT - 2007
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1

If \displaystyle\frac{1}{x+3}=2, then the value of \displaystyle\frac{1}{x+5} is

Answer Choices
A. \frac12
B. \frac23
C. \frac25
D. \frac14
E. 4