Предмет: Математика, автор: Аноним

1труба изготовила 2бака за 20 мин.2труба изготовила 4бака за 30мин. какого производительность первого бака?и второго?помогите!

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Автор ответа: Туранова

20:2=10 мин на 1 бак- производительность первой трубы
30:4=7,5 мин на 1 бак- производительность второй трубы

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