Предмет: Математика, автор: Army2324

Помогите срочно,нужно дочке

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Автор ответа: yagalikeewa
1
а) т.к. у одного скорость 60 км в час , а у другого 40, то 40+60=100 
и 100*1( т.к. за 1 час)=100
б)1час-100 км. 2часа-200км , 3часа-300 км.
в) 60км+40 км=100 км за 1 час
S=V*T
T=S:V
S=300 км
V=100 км в час
T= 300:100=3 часа
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