
Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Last updated at May 29, 2023 by Teachoo
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 = (ππ’ππππ ππ πππππ )/(ππ’ππππ ππ πππ¦π ) = 20/15 = 4/3 β΄ 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 β΄ Ratio = (ππ’ππππ ππ πππππ )/(πππ‘ππ ππ’ππππ ππ π π‘π’ππππ‘π ) = 20/35 = 4/7 β΄ Required ratio is 4 : 7