In a school, of the number of students are girls and the rest are boys. One-third of the number of boys are below 10 years and of the number of girls are also below 10 years. If the number of students of age 10 or more years is 260, then the number of boys in the school is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 300
Application
Let the total no of students = 240 units
No of boys = 5 / 8 x 240 = 150 units
No of girls = 3 / 8 x 240 = 90 units
No.of boys below 10 = 1 / 3 x 150 units = 50 units
No of girls below 10 = 2 / 3 x 90 = 60 units
Total students below age 10 = 110 units
Total students above age 10 = 130 units
According to the question,
130 units = 260 students
1 unit = 2 student
150 unit = 2 x 150 = 300 students
No of boys = 300