Предмет: Математика, автор: reznichenkojulia

Велосипедист едет со скоростью 12,5 км/ч, а переход 4,9 км/ч. Сейчас между ними 6,4 км. Какое расстояние было между ними 30 минут назад?

Ответы

Автор ответа: oxi999

(12,5+4,9) х 0,5+6,4=8.7+6,4=15.1

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