SSC CGL Tier II 12 Jan 2017 Paper 1

Question : 21 of 100

Marks: +1, -0

In a college union, there are 48 students. The ratio of the number of boys to the number of girls is 5 : 3. The number of girls to be added in the union, so that the ratio of boys to girls in 6 : 5 is

Validate

Solution:

(2) In the college union,
Number of boys

= 5/8 × 48 =30

Number of girls

= 3/8 × 48 = 18

Let the number of girls added be x.

∴{30}/{18+x}= {6}/{5}

⇒108+6 x=150

⇒ 6 x=150-108=42

⇒ x= {42}/{6}=7

Go to Question:

Prev Question

Next Question