SSC CGL 2019 PYQ — Question 72

SSC CGL - 11th June 2019 - Shift 2 • Quantitative Aptitude • Q72

The table below indicates the percentage of students and the ratio of boys and girls in the various streams of a college.

(Total students = 2600)

Streams CE CS IT ME EC
% Students 20% 15% 21% 22% 19%
Boys : Girls 3 : 2 4 : 5 3 : 4 6 : 5 9 : 10

What is the ratio of boys and girls in the college?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is Option 2 i.e 1 : 1

Number of boys in CE = 2600 × 0.2 × 3/5 = 312

Number of boys in CS = 2600 × 0.18 × 4/9 = 208

Number of boys in IT = 2600 × 0.21 × 3/7 = 234

Number of boys in ME = 2600 × 0.22 × 6/11 = 312

Number of boys in EC = 2600 × 0.19 × 9/19 = 234

Total boys = 312 + 208 + 234 + 312 + 234 = 1300

Hence, total girls = 2600 – 1300 = 1300

Ratio = 1300 : 1300 = 1 : 1