Răspuns :
varianata I
5x246=1230 masinute
5x386=1930 masinute
1230+1930=3160 masinute in total
varianta II
(5x246)+(5x386)=
=1230+1930=
=3160 masinute
varianta III
5x(246+386)=
=5x632=
=3160 masinute
varianata I
5x246=1230 masinute
5x386=1930 masinute
1230+1930=3160 masinute in total
varianta II
(5x246)+(5x386)=
=1230+1930=
=3160 masinute
varianta III
5x(246+386)=
=5x632=
=3160 masinute