The image contains a mathematical problem with a directed and weighted graph in minutes, as well as questions regarding the graph.

Here are the details from the image:

1. Graph Description:
   The diagram represents a graph with four transit stations: $K$, $L$, $M$, and $N$. Edges between these stations are labeled with weights, which denote the time in minutes for transit. There is also a fixed transit stop time of 5 minutes at each station.

2. Questions:

   • (a) Draw a spanning tree based on the graph.
   • (b) Emelda takes the commuter train from $K$ to $N$. Calculate the shortest time route.

To Solve:

(a) Draw a Spanning Tree:

A spanning tree is a subgraph that connects all the vertices together without any cycles and with the minimum number of edges.

(b) Shortest Route Calculation:

Use the shortest path algorithm (e.g., Dijkstra's Algorithm) to calculate the route from $K$ to $N$ considering the weights of the edges.

Would you like me to solve the questions step-by-step or elaborate on a specific part? Let me know!