Задача id9443

A column of motorcyclists moves along a highway at a speed v = 10 m/s, stretching over a distance l = 5 km. Two motorcyclists simultaneously ride out from the tail and head of the column towards each other with speeds v1 = 20 m/s and v2 = 15 m/s, respectively. How long will it take the first motorcyclist to reach the head, and the second - the tail of the column?

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