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Ответ

Автор - nuwka81
14*2=28км 1 г
52-28=24км
24:2=12км/ч-2 группа

Ответ

Автор - kirito477
S=vt (расстояние= скорость×время)
52=2×(14+х)
26=14+х
х=26-14
х=12

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