Ex 12.1
Last updated at December 16, 2024 by Teachoo
Transcript
Ex 12.1, 1 There are 20 girls and 15 boys in a class. (a) What is the ratio of number of girls to the number of boys? Number of girls = 20 Number of boys = 15 Ratio = (šš¢šššš šš ššššš )/(šš¢šššš šš ššš¦š ) = 20/15 = 4/3 ā“ Required ratio is 4 : 3 Ex 12.1, 1 There are 20 girls and 15 boys in a class. (b) What is the ratio of number of girls to the total number of students in the class?Total number of students = Number of girls + Number of boys = 20 + 15 = 35 ā“ Ratio = (šš¢šššš šš ššššš )/(ššš”šš šš¢šššš šš š š”š¢šššš”š ) = 20/35 = 4/7 ā“ Required ratio is 4 : 7