Question

tot cu rezolvare dau coroana

Answer 1

x-distanta totala

I zi: parcurge x/3 ;ramas de parcurs x-x/3=2x/3

II zi: parcurge 1/3·2x/3=2x/9;ramas de parcurs 2x/3-2x/9=4x/9

III zi: parcurge 1/3·4x/9=4x/27;ramas de parcurs 4x/9-4x/27=8x/27

8x/27=800⇔x=27·800/8=27·100=2700 Km