Предмет: Математика, автор: solovievasveta2

1 труба заполняет за 20 мин, 2 труба за 24 мин, 3 труба за 30 мин.за сколько минут наполнят три эти трубы

Ответы

Автор ответа: ivonapayreta

За 74 минуты (1 час и 14 мин)

Автор ответа: Masha220511

э о очень легко, 74 .
1)20+24=44(мин)-за столько набираются 1 и 2 труба.
2)44+30=74(мин)-за столько набираются 3 трубы.
Ответ:74 минуты

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