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за 1 час убрать кортофель 3 картофелеуборочных комбайна могут с поля площадью 12 га,. За какое время 10 комбайнов уберут картофель с 60 га?
ответ 1ч 30мин , мне нужно решение с пояснением, пожаааалуйста только быстрее!!!!!!!!-
Предмет:
Математика -
Автор:
ryanomi6 - 5 лет назад
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Ответы 1
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Эта задача решается с понятием - РАБОТА = Производительность*Время*Количество.Р= П*В*КОтсюдаПроизводительность = Р/(В*К)Время = Р/(П*К)Решение1. Определяем производительность комбайнаП = 12/(1*3) = 4 га/час2. Определяем времяВ = 60/(4*10) = 1,5 час = 1 час 30 мин. - ОТВЕТ
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Автор:
wilsoneema - 5 лет назад
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