Предмет: Математика, автор: наря1

из двух посёлков одновременно вышели навстречу друг другу два пешехода расстояние между посёлками равно 18км первый пешеход пошёл со скоростью 4 км в час какова скорость второго пешехода , если известно ,что они встретились через 2 часа

Ответы

Автор ответа: Артём1103
0
1) 18:2=9 (км/ч) - скорость сближения
2) 9-4=5 (км/ч) 
Ответ: скорость 2 пешехода равна 5 км/ч. 
Автор ответа: Артём1113
0
4×2=8; 18-8=10(км/ч)- скорость второго пешихода.
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