Production levels in the Leontief model

An economy with two sectors has technology matrix and final demand

$$A=\left(\begin{array}{cc}0.3& 0.2\\ 0.1& 0.4\end{array}\right),d=\left(\begin{array}{c}20\\ 40\end{array}\right).$$

Find the production levels of the two sectors that meet the final demand.