Предмет: Математика, автор: maxpro

выезжая из села велосепедист заметил на мосту пещехода иду щего в том же напровлении и догнал его через 12 минут найдите скорость пешехода если скорость велосепедиста 15 км/ч а растояние от села до моста 1км 800м.

Ответы

Автор ответа: gordik73

х скорость пешехода

12 мин = 0,2 часа

0,2х+1,8=0,2*15

0,2х+1,8=3

0,2х=3-1,8

0,2х=1,2

х= 1,2/2

х = 6 км/ч

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