Source a Has Capacity of 15, Source B Has Capacity

Essay

Source A has capacity of 15, Source B has capacity of 30, Destination 1 has demand of 5 and Destination 2 has demand of 20. Fill in the following table with the correct initial solution for a Northwest-corner method approach.
$$\begin{array} { | l | c | c | c | } \hline & \text { Destination 1 } & \text { Destination 2 } & \text { Dummy Destination } \\\hline \text { Source A } & 5 & 10 & \\\hline \text { Source B } & & 10 & 20 \\\hline\end{array}$$