A class has 30 boys and 20 girls. Find:(i) the percentage of girls in the class(ii) the percentage of boys in the class(iii) percentage of number of boys as compared with number of girls.
Total students in class = Number of boys + Number of girls = 30 + 20 = 50
(i) (20/50) × 100 = 40%
(ii) (30/50) × 100 = 60%
(iii) (30/20) × 100 = 150%