82. The Cart. "Three men," said Crackham, "Atkins, Brown, and Cranby, decided to go on a short trip. They have a distance of 40 km to cover. Atkins walks at a speed of 1 km/h, Brown at 2 km/h, and Cranby, with his cart pulled by a donkey, travels at 8 km/h. For some time, Cranby carries Atkins, then drops him off to walk the remaining distance, then returns for Brown and carries him to the final destination, and all three arrive there simultaneously.

How long did the trip last? Of course, all this time the friends moved at a constant speed."
82. The journey lasted \(10 \frac{5}{41}\) hours. Atkins walked \(5 \frac{35}{41}\) km; Brown - \(13 \frac{27}{41}\) km, and Cranby's donkey ran a total of \(80 \frac{40}{41}\) km. I hope the donkey was given a good rest after such a feat.