Oblicz: 30%, 41%, 78%, 504%, 2095% liczby 18.

18-100% x-30% x=18*30/100 x=5,4 18-100% x-41% x=18*41/100 x=7,38 18-100% x-78% x=18*78/100 x=14,04 18-100% x-504% x=18*504/100 x=90,72 18-100% x-2095% x=18*2095/100 x=377,1

30%= 30%*18= 30/100*18=5.4 41%= 41/100* 18=7.38 78%= 78/100*18=14.04 504%= 504/100*18=90.72 2095%=2095/100* 18=377.1 :]

30% - 18 100% - x x - szukana liczba x = 100% * 18 ÷ 30% = 1800 ÷ 30 = 60 41% - 18 100% - x x- szukana liczba x = 100% * 18 ÷ 41% = 1800 ÷ 41 ≈ 43,9 78% - 18 100% - x x - szukana liczba x = 100% * 18 ÷ 78% = 1800 ÷ 78 ≈ 23,1 504% - 18 100% - x x - szukana liczba x = 100% * 18 ÷ 504% = 1800 ÷ 504 ≈ 3,6 2095% - 18 100% - x x - szukana liczba x = 100% * 18 ÷ 2095% = 1800 ÷ 2095 ≈ 0,9