70% z 450 10% z 350 20%z 680

70% * 450= 315 10% * 350= 35 20% * 680 = 136 Pozdro :)

=450*0.7=315 =350*0.1=35 680*0.2=136

70% z 450=0,70*450=315 10% z 350=0,10*350=35 20%z 680=0,20*680=136