What does each person do at a radio station? • DJ • Journalist • Producer • Engineer

4 ч 40 мин = 4 2/3 часа
х км/ч - скорость течения реки
6 * (24 - х) = 4 2/3 * (24 + х)
144 - 6х = 112 + 4 2/3х
-6х - 4 2/3х = 112 - 144
-10 2/3х = -32
х = -32 : (-10 2/3)
х = 32 * 3/32
х = 3 км/ч - скорость течения реки