A train leaves barcelona at 21.28 and takes 10 hours nad 33 minutes to reach paris calculate the time and the distance from barcelona is 827km calculte the average speed of the train in kilometres per hour

Speed = Distance / Time, therefore, Speed = 827km / 10.55 hrs. I got 10.55 hours because I converted the 33 minutes into hours and got 0.55 and added it to the 10 hours which is given. so the answer would be approx. 78.39 km / h. I rounded it to the nearest 2 decimal places.