Răspuns :
total drum = 5/5
3/5 din total = 9 km 》 1/5= 9:3=3 km
5/5-3/5=2/5 (au ramas de parcurs)
2/5 = 2×3 km =6 km
lungime totala drum = 9 km + 6 km = 15 km
3/5 din total = 9 km 》 1/5= 9:3=3 km
5/5-3/5=2/5 (au ramas de parcurs)
2/5 = 2×3 km =6 km
lungime totala drum = 9 km + 6 km = 15 km