Предмет: Математика, автор: zhenka200474

Мама идёт в магазин со скоростью 30м/мин и доходит до магазина за 15 мин.За какое время добежал бы до этого магазина сын,если его скорость в 3 раза больше маминой?Помогите!!!

Ответы

Автор ответа: рашид00000

1) 30*15=450(м) расстояние от дома до магазина 2) 30*3=90м/мин) скорость сына 3) 450:90=5(за 5минут) Ответ: Сын добежит за 5минут

zhenka200474: Спасибо!

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