Q. In a class, 60% of students are from India and 50% of the students are girls. If 30% of the Indian students are girls, then what percentage of foreign students are boys?

Explanation : 

In a class 60 of students are from india

Given:
– Total students = 100
– Indian students = 60%
– Foreign students = 40
– Total girls = 50%
– Indian girls = 30% of 60 = 18

Step-by-step solution:
1. Foreign girls = Total girls – Indian girls
= 50 – 18 = 32

2. Foreign boys = Total foreign – Foreign girls
= 40 – 32 = 8

3. Percentage of boys among foreign students
= (8/40) × 100 = 20%

Answer: (d) 20%