Priya can travel from Town X to Town Z in two ways.
Direct: depart X 17:40, journey time 1 hour 50 minutes.
Via Town Y: depart X 17:20 to Y (journey 40 minutes), then a connection Y to Z departs 18:15 and takes 35 minutes.
Work out the arrival time for each route and state which route gets Priya to Town Z earlier.
(Total for Question 15 is 3 marks)