Предмет: Математика, автор: olga1913

Из двух городов выехали одновременно навстречу друг другу два мотоциклиста.Один из них двигался со средней скоростью 70 км/ч и проехал до встречи 140км,а другой двигался со средней скоростью 65 км/ч.Найди расстояние между городами.Составь и реши обратную задачу.

Ответы

Автор ответа: Cvetocek

140:70=2 часа - до встречи

65*2=130км - проехал 2 мотоциклист до встречи

140+130=270 км - расстояние между городами

Обратная задача:

Расстояние между городами 270 км. Один мотоциклист ехал со скоростью 70 км/ч. Найдите скорость 2 мотоциклиста, если встретились они через 2 часа.

70*2=140 км - проехал первый мотоциклист до встречи

270-140=130км - проехал 2 мотоциклист до встречи

130:2-65 км/ч - скорость 2 мотоциклиста

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