Midpoint of $\dfrac{1}{2}$ and $\dfrac{1}{4}$ is

Midpoint of $\dfrac{1}{2}$ and $\dfrac{1}{4}$ is
  1. $\dfrac{3}{8}$
  2. $\dfrac{1}{3}$
  3. $\dfrac{5}{8}$
  4. $\dfrac{1}{8}$

Solution

$\dfrac{1}{2}\left(\dfrac{1}{2}+\dfrac{1}{4}\right) = \dfrac{3}{8}$.

Asked in: IMO

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