1- a zi ) x/2 ; x-x/2 =2x/2 -x/2 =x/2 ramas
2-a zi ) x/2:2 \x/2 *1/2 =x/4 ; x/2 =x/4 =2x/4 -x/4 =x/4 ramas
3-a zi ) x/4 :4 =x/4* 1/4 =x/16
4-a zi ) 12km
x/2+x/4+x/16 =12 =x ; numitor 16 ; ( x = traseul )
8x+4x+x+192 =16x
16x-8x-4x-x =192
3x =192
x =64 km
1 zi )64/2 =32 km
2 zi )64/4 =16km
3 zi) 64/16/16 =4
4 zi ) 12 km