Odpowiedzi

2009-11-24T19:43:24+01:00
2009-11-24T19:43:40+01:00
1/3x80 km/h + 2/3x30 km/h= 26,6+20= 46,6 km/h
2009-11-24T19:45:05+01:00
1/3 trasy<--------80km/h
2/3 trasy<--------30km/h

1/3*80 km/h + 2/3*30 km/h= 26,6+20= 46,6 km/h