10% of students taking admission in a course drop out before completing their course and among those drop outs 30% are girls. If total number of students taking admission in the college is 200 and among them 50 are girls, then number of girls who completed the course is

[amp_mcq option1=”44″ option2=”42″ option3=”40″ option4=”36″ correct=”option2″]

The correct answer is (b) 42.

The number of students who drop out is 10% of 200 = 20.
The number of girls who drop out is 30% of 20 = 6.
The number of girls who complete the course is 50 – 6 = 44.

Here is a step-by-step solution:

1. Find the number of students who drop out: 10% of 200 = 20
2. Find the number of girls who drop out: 30% of 20 = 6
3. Find the number of girls who complete the course: 50 – 6 = 44

Here is a brief explanation of each option:

• Option (a) is incorrect because it is the number of students who drop out, not the number of girls who complete the course.
• Option (b) is correct because it is the number of girls who are enrolled in the course minus the number of girls who drop out.
• Option (c) is incorrect because it is the number of girls who are enrolled in the course.
• Option (d) is incorrect because it is the number of students who drop out minus the number of girls who drop out.