Предмет: Математика, автор: polina23878

Первая труба может заполнить бассейн за 60 минут, а другая – за 30 минут.
За сколько минут можно заполнить бассейн, если включить обе трубы?
-и еще-
Катя может справиться с задачей, поставленной папой, за 24 часа, а Витя может справиться с этой же задачей за 8 часов.
За сколько часов с этой задачей справятся Витя и Катя вместе при совместной работе?

Ответы

Автор ответа: theliroyml2020

Ответ:

1. За 30 минут

2. за 16 часов

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