1. **Problem Statement:** (a) The plane leaves Malta at 08:25 and the flight duration is 3 hours 25 minutes. London time is 1 hour behind Malta. Find the landing time in London. (b) The departure is delayed by 25 minutes, and the flight time is 10 minutes less than expected. Find the new landing time in London. 2. **Formula and Rules:** - To add time, add hours and minutes separately. - If minutes exceed 60, convert to hours. - Adjust for time zone differences by adding or subtracting hours. 3. **Step-by-step solution for (a):** - Departure time: 08:25 - Flight time: 3 hours 25 minutes - Add flight time: $$08:25 + 3:25 = 11:50$$ - Adjust for time zone (London is 1 hour behind Malta): $$11:50 - 1:00 = 10:50$$ 4. **Step-by-step solution for (b):** - Original departure: 08:25 - Delay: 25 minutes - New departure: $$08:25 + 0:25 = 08:50$$ - Original flight time: 3 hours 25 minutes - Flight time reduced by 10 minutes: $$3:25 - 0:10 = 3:15$$ - Add new flight time to new departure: $$08:50 + 3:15 = 12:05$$ - Adjust for time zone (London 1 hour behind Malta): $$12:05 - 1:00 = 11:05$$ 5. **Check intermediate cancellation for addition:** - For (a): No cancellation needed. - For (b): Adding minutes and hours straightforward. 6. **Final answers:** - (a) Plane lands at **10:50** London time. - (b) Plane lands at **11:05** London time.