Aflaţi 12% din numărul 250.

Răspuns :

12% din250 =10%din250+2%din250=250/10+250/50=25+5=30
as simple as that!!

altfel
12*250/100=(2500+500)/100=3000/100=30
12%x250 = 12x250/100 = 3000/100 = 30