Question

20. The ratio between the number of boys and girls in a class is 8: 7. If there are 48 boys in the
class, find the:
(a) number of girls in the class.
(b) total number of students in the class.​

Answer 1

Given:

• The ratio of no. of boys & girls = 8:7
• No. of boys in class = 48

To find:

• No. of girls in the class
• Total no. of students in the class

Solution:

8x = 48

or

x = $\frac{48}{8}$

or

x = 6

(a) So, number of girls in the class = 7x = 7 × 6 = 42

(b) Total no. of students in the class = 48 + 42 = 90