Répondre :
Bonjour;
3h51 mn =
3*60+51 = 180+51 => 231mn
1h = 60mn
231mn -> 166km
1mn -> 166/231
60mn -> (166*60)/231
=> 43,12km/h
Bonjour;
3h51 mn =
3*60+51 = 180+51 => 231mn
1h = 60mn
231mn -> 166km
1mn -> 166/231
60mn -> (166*60)/231
=> 43,12km/h