Ajutați mă va rog.Ofer 11 puncte

2 ore = 2x60 m = 120 minute
3 km ......... 120 minute
x km ............40 minute
x = 3km×40m/120m = 120km/120 = 1 km poate fi parcurs in 40 de minute
2 ore = 2 × 60 = 120 de minute
120 de minute.........3 km
40 de minute..........X km
X = 40 × 3 : 120
X = 120 : 120
X = 1 km