Let $a,$ $b,$ $c$ be positive real numbers such that $a + b + c = 1.$  Find the minimum value of
\[\frac{1}{a + 2b} + \frac{1}{b + 2c} + \frac{1}{c + 2a}.\]
Question:
Let $a,$ $b,$ $c$ be positive real numbers such that $a + b + c = 1.$  Find the minimum value of
\[\frac{1}{a + 2b} + \frac{1}{b + 2c} + \frac{1}{c + 2a}.\]
Answer:
Let's think step by step.

user
3
Let $a,$ $b,$ $c$ be positive real numbers such that $a + b + c = 1.$  Find the minimum value of
\[\frac{1}{a + 2b} + \frac{1}{b + 2c} + \frac{1}{c + 2a}.\]
train