Here is part of a bus timetable between Manchester and Liverpool.
| Manchester | 0815 | 0915 | 1015 | 1115 |
| Salford | 0830 | 0930 | - | - |
| Warrington | 0855 | - | 1050 | - |
| Liverpool | 0942 | 1038 | 1135 | 1245 |
A bus leaves Manchester at 0915, how many minutes should it take to reach Liverpool?
What is the difference, in minutes, between the time it takes for the 0815 bus and the 0915 bus from Manchester to reach Liverpool?
Sam lives in Salford. He has to get to a meeting in Liverpool for 1200. What is the time of the latest bus he can get from Salford?
