Предмет: Математика, автор: oma1503

Биологи проводили исследование бактерий. Каждый час каждая бактерия делится на две. Впробирку посадили несколько бактерий и через 20 часов они заполнили всю пробирку. Через сколько часов пробирка была заполнена на половину?

Ответы

Автор ответа: 20ришави20

за 1 час все бактерии делятся на две, то есть час назад бактерий было меньше в 2 раза
Ответ: через 19 часов

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