Răspuns :
15 fete..........10 baieti...........420 panselute
12 fete..........10 baieti...........360 panselute
15-12=3 fete
420-360=60 panselute
60:3=20 panselute (o fata)
12x20=240 panselute 12 fete
360-240=120 panselute 10 baieti
120:10=12 panselute (un baiat)
12 fete..........10 baieti...........360 panselute
15-12=3 fete
420-360=60 panselute
60:3=20 panselute (o fata)
12x20=240 panselute 12 fete
360-240=120 panselute 10 baieti
120:10=12 panselute (un baiat)