In a college 50% students are boys out of which 40% have got 80% and above marks. Overall, 45% of all the students have got 80% and above marks. Find the percentage of girls who have got less than 80% marks.
Suppose 100 students are in the college: 50 boys and 50 girls. Now 40% of the boys i.e. 20 boys have got 80% and above marks. And Total 45 students have got 80% and above marks. So, number of girls who have got 80% and above = 25. Total number of girls = 50. Hence 50% of the girls have got less than 80% marks.