Question 154
Given is a regular pentagon $ABCDE$. Determine the least value of the expression
$$
\frac{PA + PB}{PC + PD + PE}
$$
where $P$ is an arbitrary point lying in the plane of the pentagon $ABCDE$.
$$
\frac{PA + PB}{PC + PD + PE}
$$
where $P$ is an arbitrary point lying in the plane of the pentagon $ABCDE$.