👤

problema;dupa ce a parcurs2/3 din lungimea unui drum, un biciclist observa ca mai are de parcurs 12 km. Ce lungime are drumul?


Răspuns :

|_____||_____||_____| drum
|++++||++++|......12...

Deci se observa ca un segment=12

Drum=12+12+12=36

============
- drum
[tex] \frac{2}{3}d+ \frac{1}{3}d=d=> \frac{1}{3}d=12=>d=12*3=>d=36[/tex]