8424= masinute albastre
1) Cate masinute rosii s-au produs?
8424:3=2808 masinute rosii
2)Cate masinute s-au produs in total?
8424+2808=11232 masinute
3) Cate cutii s-au folosit?
11232:12=936 cutii
sau
[8424+(8424:3)]:12=[8424+2808]:12=11232:12=936
sau
(8424:12)+[(8424:3):12]=702+[2808:12]=702+234=936