Предмет: Математика, автор: lilimalarcyk

через першу трубу басейн можна наповнити за 2 години, а через другу за 8 годин.За який час наповниться басейн, якщо обидві труби відкрити одночасно?​

Ответы

Автор ответа: vika20101110
0

Відповідь:

вроді 4, але не впевнена

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