Distance-Time Graphs

The distance-time graphs show the journeys of two cyclists \(A\) and \(B\).
Cyclist \(A\) travelled from \(P\) to \(Q\) while cyclist \(B\) travelled from \(Q\) to \(P\).
Use the graph to answer each of the following questions.

1. Find the distance \(PQ\).
2. How long did cyclist \(B\) rest during the journey?
3. At what time did cyclists \(A\) and \(B\) meet?
4. Find the average speed of cyclist \(B\) for the whole journey.