The ratio of the number of boys and girls in a school is 3 : 2. If 20% of the boys and 25% of the girls are scholarship holders, the percentage of the school students who are not scholarship holders is ________.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 78.
The ratio of no. of boys to girls = 3 : 2
No. of boys and girls are 3x and 2x respectively
% of students who are not scholarship holders
= (80% of 3x + 75% of 2x)/(3x + 2x) × 100
= (2.4x + 1.5x)/5x × 100
= 3.9x/5x × 100
= 78%