Jika 20 gram gula di larutkan dalam 180 gram air ,maka kadar gula yg terbentuk

massa gula = 20 gram

massa larutan = massa air + massa gula
massa larutan = 180 + 20 = 200 gram

% = (massa gula / massa larutan) x 100
% = (20 / 200) x 100
% = 10%