Question

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.

• A. 33%
• B. 60%
• C. 50%
• D. 40%
• E. cannot be determined

Answer 1

The correct option is C 50%

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. Total 45 students have got $80\%$and above marks. So, number of girls who have got $80\%$and above are 25. Total number of girls are 50. Hence $50\%$of the girls have got less than $80\%$marks.