Răspuns :
regula de trei simpla cu marimi invers proportionale
4r...............5h
6r................x
x=4*5/6=20/6=3,33
raspuns corect d 3ore si33 minute
4r...............5h
6r................x
x=4*5/6=20/6=3,33
raspuns corect d 3ore si33 minute