Предмет: Математика, автор: konovalekaterina1956

з пункту А вийшов пішохід зі швидкістю 5 кілометрів в годину.через 2 години з того ж пункту А в протилежному напрямку виїхав велосипедист зі швидкістю 15 кілометрів за годину. скільки часу в дорозі був велосипедист у той момент коли відстань між ним і пішоходом стала дорівнювати 70 кілометрів

Ответы

Автор ответа: alexlex200707
1

Ответ:

3 години

Пошаговое объяснение:

З а 2 години  пішоход пройшов

2* 5 = 10 км

Швидкість віддалення

15+5=20 км /год

70-10= 60 км - відстань між велосипедистом і пішоходом з урахуванням того , що пішоход уже був 2 годи в дорозі

60 : 20 = 3 години - такий час був у дорозі велосипедист


konovalekaterina1956: спасибо
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