  This paper deals with solution of inequality $\textbf{A}\otimes
\textbf{x}\preceq \textbf{b}$, where $\textbf{A}, \textbf{x}$ and $\textbf{b}$
are interval matrices with entries defined over idempotent semiring. It deals
also with the computation of a pair of intervals, ($\textbf{x},\textbf{y}$)
which satisfies the equation $\textbf{A} \otimes \textbf{x}=\textbf{B}\otimes
\textbf{y}$. It will be shown that this equation may be solved by considering
the interval version of the iterative scheme proposed by Cuninighame-Green and
Butkovic in 2003.
