Предмет: Математика, автор: умнечка3

Петя поднимается с первого этажа на 4 дают 4 минуты а Маша с 4 этажа на 7 защита 3 минуты кто из них поднимается быстрее с первого этажа на 7 и на сколько минут если все лестницы между этажами устроены одинаково

Ответы

Автор ответа: kostik20021

4:4=1(этаж) за минуту
7-4=3(этаж) пробежала маша
3:3=1(этаж) за минуту Маша
1×7=7 (мин) Петя
1×7=7 (мин) маша

Автор ответа: умнечка3

спасибо но это неправельно

Автор ответа: kostik20021

почему

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