Предмет: Математика, автор: olgamatv

от автобусной станции отошел автобус со скоростью 40 км в час.через час в противоположном направлении вышел другой автобус,скорость которого 60 км. в час. а)ЧЕРЕЗ КАКОЕ ВРЕМЯ после ыхода первого автобуса РАСТОЯН.МЕЖДУ НИМИ БУДЕТ =140 км. б)через какое время после выхода первого автобуса растояние будет=240 км ч

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Автор ответа: basler
0

 

 

 

первый автобус движется со скоростью 40км/ч. через час из точки отправления вышел второй автобус, а первый к тому времени проехал уже 40 километров. через 2 часа первый проехал уже 80 км а второй 60 и в итоге расстояние между ними стало 140 км.  еще через час они проехали 40 и 60 километров каждый что в итоге получилось что расстояние между ними стало 240 км

 

 

через 2 часа расстояние 140 км

 

 

через 3 часа 240 км 

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