Neco Model Questions Vol1 2019 Geography Question 14

A student must travel from City X to City Z for an exam that starts at 9:00 am. The journey consists of a train from X to Y followed by a bus from Y to Z. - The train departs X at a time to be chosen, travels 180 km at an average speed of 80 km h\(^{-1}\) and makes a 10‑minute stop at an intermediate station. - After the train arrives at Y the student must wait at least 15 minutes before boarding a bus. - Buses leave Y every half‑hour on the hour and half‑hour (e.g., 7:00, 7:30, 8:00 …). - The bus covers 120 km. For the first 40 km the speed is reduced by 10 % because of traffic; the remaining 80 km are travelled at the normal 60 km h\(^{-1}\). What is the latest possible departure time of the train (in 24‑hour format hh:mm) that still allows the student to reach City Z before 9:00 am?