please answer my questions
first one is how much time will a train
take to cover a distance of 15 kilometre while moving at a speed of 90 km per hour
second question is a man is walking at a uniform speed of 5 km per hour how much distance he covered in 10 minutes
that question is a bus is moving at a constant speed of 40 km per hour for 15 minutes how much distance will it cover

please answer this question