Răspunsuri

  • Utilizator Brainly
2014-02-19T17:13:35+02:00
In prima zi 1/2 din distanta, ramane 1/2.
In a doua zi 1/2 din 1/2: 1/2*1/2=1/4 din distanta.
Dupa doua zile au parcurs 1/2+1/4=3/4 din distanta deci au mai ramas 1/4 de parcurs.
50 km=1/4 ⇒ distanta totala =4*50=200 km.
  • Utilizator Brainly
2014-02-19T18:19:47+02:00
X=distanta
x-(X/2+1/2*x/2 )=50
x-x/2-x/4=50
(4x-2x-x)/4=50
x/4=50
x=200