Question 105
The Mumbo-Jumbo tribe lives at a river. Once two members of a tribe — a young warrior Mumbo and a wise shaman Jumbo — departed to the neighboring tribe with an urgent news. Mumbo ran at $11$ km/h to the nearest location of the rafts, took a raft and drove it to the neighboring tribe. Jumbo went at $6$ km/h to another raft location and took a raft there. It appeared that Jumbo came to another tribe earlier than Mumbo.
The river is straight, and the rafts move only at the velocity of the river flow. This velocity is constant, and it has an integer value (in km/h). Find the greatest possible value of the river flow velocity. (M. Evdokimov, reformulated by L. Samoylov)
The river is straight, and the rafts move only at the velocity of the river flow. This velocity is constant, and it has an integer value (in km/h). Find the greatest possible value of the river flow velocity. (M. Evdokimov, reformulated by L. Samoylov)