Question

Dupa ce parcurge doua cincimi din drum , un calator consta ca mai are te parcurs 3 km pana la jumatatea drumului . Determinati lungimea drumului !

Answer 1

x=lungime drum
2x/5+3=x/2
4x+30=5x
x=30 km

Answer 2

2/5(x)+3=(1/2)x
$\frac{2}{5} *x+3= \frac{1}{2} *x; \\ 2*2*x+30=1*5*x \\ 30=5x-4x \\ x=30 \\ lungime. drum=30 km$