👤

Un automobil a parcurs 65% dintr-un drum si mai are de parcurs 70 km.Cati km are intregul drum?

Răspuns :

x drum.............100% 
 parcurs    .......... 65% 
ramas ........... 100% - 65% = 35% .................. 70 km
35% · x = 70km 
35 · x /100 = 70 km 
35 · x = 70 ·100 km
x = 7000 :35 km = 200 km
100-65=35%
35%=70 km
65%=70:35x65=130 km
100%=130+70=200 km are drumul