Предмет: Математика, автор: nurdinovaalisa666

Птичка может перепрыгивать с одного дерева на другое. На один прыжок уходит 2½ секунды. Она прыгает 4 раза вперед, 1 раз назад. Потом прыгает еще 4 раза вперед, 1 раз назад. Таким образом, за какое временя птичка дойдет от А до Б?

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Ответы

Автор ответа: lizaillyashenko
2

2*(1/2) = 1 секунда. Птичка прыгает 4 прыжка вперёд, один назад. То есть на три прыжка уходит 5 секунд. Ответ: 14 секунд.

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