Answer:
It will arrive at 19:24 pm at london
Explanation:
Distance between London and Manchester = 195 miles
Speed of coach = 50 mph
Time taken to cover the given distance =

Time taken to cover the given distance =

1 hour = 60 minutes
0.9 hours =

So,Time taken to cover the given distance = 3 hours 54 minutes
He left at 15:30 pm
Total time taken = 3 hours 54 minutes
It will arrive at time =19:24 pm
Hence it will arrive at 19:24 pm at London